diff --git a/src/main/java/de/thm/arsnova/cache/CacheBusterImpl.java b/src/main/java/de/thm/arsnova/cache/CacheBusterImpl.java
index ab506f7b02e9824ff80488b7da197b258ae31242..bcd69ae7ac4768295cec26dde4a3cfafe00444a6 100644
--- a/src/main/java/de/thm/arsnova/cache/CacheBusterImpl.java
+++ b/src/main/java/de/thm/arsnova/cache/CacheBusterImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/config/AppConfig.java b/src/main/java/de/thm/arsnova/config/AppConfig.java
index 5b333883359dcc97dabd364adce5ebede952d4af..f1b869f1a9f87044dc46592b8d73f22430c489f2 100644
--- a/src/main/java/de/thm/arsnova/config/AppConfig.java
+++ b/src/main/java/de/thm/arsnova/config/AppConfig.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/config/AppInitializer.java b/src/main/java/de/thm/arsnova/config/AppInitializer.java
index ec15d8da40c52684d7db0718415345bdefec0f3e..6cf48b595e73a784bd5e3f7c7c5bab6316d827d8 100644
--- a/src/main/java/de/thm/arsnova/config/AppInitializer.java
+++ b/src/main/java/de/thm/arsnova/config/AppInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.config;
 
 import org.springframework.web.filter.CharacterEncodingFilter;
diff --git a/src/main/java/de/thm/arsnova/config/PersistenceConfig.java b/src/main/java/de/thm/arsnova/config/PersistenceConfig.java
index d36602975d69ac9ba6aed32db1248f3e75c3adf0..681da8237c6e620a624eebecc6f1ea0f7a536276 100644
--- a/src/main/java/de/thm/arsnova/config/PersistenceConfig.java
+++ b/src/main/java/de/thm/arsnova/config/PersistenceConfig.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.config;
 
 import de.thm.arsnova.model.serialization.CouchDbObjectMapperFactory;
diff --git a/src/main/java/de/thm/arsnova/config/SecurityInitializer.java b/src/main/java/de/thm/arsnova/config/SecurityInitializer.java
index 7fe7da8c82854c1af294dc03b96d16ae530ea5d4..77f73e76cc8f169ab26b263db9f70e955a3ab8a4 100644
--- a/src/main/java/de/thm/arsnova/config/SecurityInitializer.java
+++ b/src/main/java/de/thm/arsnova/config/SecurityInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.config;
 
 import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;
diff --git a/src/main/java/de/thm/arsnova/controller/AbstractEntityController.java b/src/main/java/de/thm/arsnova/controller/AbstractEntityController.java
index ce3c4f23f905b62fcdf1c7e54263b752a105055e..0bcfdaf5b09a47ffb6dd3c6b0dec3b93ba174420 100644
--- a/src/main/java/de/thm/arsnova/controller/AbstractEntityController.java
+++ b/src/main/java/de/thm/arsnova/controller/AbstractEntityController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/AnswerController.java b/src/main/java/de/thm/arsnova/controller/AnswerController.java
index 2f0a8b2f0c1d2fecd77206434d9d524ae9dacc64..2789bba9004f430a2073a00387bb8143c02b64fd 100644
--- a/src/main/java/de/thm/arsnova/controller/AnswerController.java
+++ b/src/main/java/de/thm/arsnova/controller/AnswerController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/AuthenticationController.java b/src/main/java/de/thm/arsnova/controller/AuthenticationController.java
index 91b3a35f5cee978aa8b1ab0f80f2aaf2a8e85051..e6b8e2d3c08422e43db2196791028212e164093d 100644
--- a/src/main/java/de/thm/arsnova/controller/AuthenticationController.java
+++ b/src/main/java/de/thm/arsnova/controller/AuthenticationController.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.controller;
 
 import de.thm.arsnova.model.ClientAuthentication;
diff --git a/src/main/java/de/thm/arsnova/controller/ContentController.java b/src/main/java/de/thm/arsnova/controller/ContentController.java
index de17e6d37009184dcaf8b142ca4a254afcde593c..31101a7afcf3197d54bc0f2be747bb2ed37fc92e 100644
--- a/src/main/java/de/thm/arsnova/controller/ContentController.java
+++ b/src/main/java/de/thm/arsnova/controller/ContentController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/RoomController.java b/src/main/java/de/thm/arsnova/controller/RoomController.java
index db38d8a3d3aabc7fa294d2055a40188c9b078319..7c263acbe717f2c8ebaaddbf8a9ec2d4251e09d0 100644
--- a/src/main/java/de/thm/arsnova/controller/RoomController.java
+++ b/src/main/java/de/thm/arsnova/controller/RoomController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/UserController.java b/src/main/java/de/thm/arsnova/controller/UserController.java
index c6416a32feaedfa7ff649882d4159292424e1caa..4814abcc51b5173fbe239ee7742186911e9e2b85 100644
--- a/src/main/java/de/thm/arsnova/controller/UserController.java
+++ b/src/main/java/de/thm/arsnova/controller/UserController.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.controller;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/controller/v2/CommentController.java b/src/main/java/de/thm/arsnova/controller/v2/CommentController.java
index 83811330c90e535f838e0e9d9aaed2b6991b624d..ae63d490f71db9974f03b0ce1396ccfd7e04f225 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/CommentController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/CommentController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/ContentController.java b/src/main/java/de/thm/arsnova/controller/v2/ContentController.java
index d600d8205e273444800e44f13c9b1ae3a0fbdc5c..8942eea2c6a3d0584c8f4541446159222937f171 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/ContentController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/ContentController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/FeedbackController.java b/src/main/java/de/thm/arsnova/controller/v2/FeedbackController.java
index ba5db82e631e941e9dd27a3f09a0bed7fb8f6515..5f7dda3088010d85e212b00ce8159d85b9fca7cb 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/FeedbackController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/FeedbackController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/LegacyController.java b/src/main/java/de/thm/arsnova/controller/v2/LegacyController.java
index 5ff4fe6301fbd6b8492eaa4929080d4f5718e07f..0e7416219daa8ac9d8059a714cdc2dcb90d50d0d 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/LegacyController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/LegacyController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/MotdController.java b/src/main/java/de/thm/arsnova/controller/v2/MotdController.java
index 7e65c4400a55610e6aa4acdb8dbb5962465ad796..31aae6b5708fd4937a2bf8d683bceba0c4d93787 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/MotdController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/MotdController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/RoomController.java b/src/main/java/de/thm/arsnova/controller/v2/RoomController.java
index db8b9d6ebb4dd6bba64e19b4b2a1020e529e2456..d9475104079c1621539b178564d120f89370425a 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/RoomController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/RoomController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/controller/v2/UserController.java b/src/main/java/de/thm/arsnova/controller/v2/UserController.java
index ea20a0782a7948eaf8ef9ccd8892280037273aa3..72c88a6621cdec98377fbf12d9a421c7c611bd57 100644
--- a/src/main/java/de/thm/arsnova/controller/v2/UserController.java
+++ b/src/main/java/de/thm/arsnova/controller/v2/UserController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/event/AfterCreationEvent.java b/src/main/java/de/thm/arsnova/event/AfterCreationEvent.java
index 5267b6d2efc083b58ba032e451df41817a739ad4..6c35146c9f64426811c18c4b32a961bf2322cacf 100644
--- a/src/main/java/de/thm/arsnova/event/AfterCreationEvent.java
+++ b/src/main/java/de/thm/arsnova/event/AfterCreationEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/AfterDeletionEvent.java b/src/main/java/de/thm/arsnova/event/AfterDeletionEvent.java
index 34115a7442a128dbdcca848318017f1b1001dc3b..6a633db9b665257d48309f1ad682879c99178b90 100644
--- a/src/main/java/de/thm/arsnova/event/AfterDeletionEvent.java
+++ b/src/main/java/de/thm/arsnova/event/AfterDeletionEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/AfterFullUpdateEvent.java b/src/main/java/de/thm/arsnova/event/AfterFullUpdateEvent.java
index 3d944d51cfd05c80084d9b73dba062883f657d38..ae23ce044a2287814602c08f2bd6d1e6bef48513 100644
--- a/src/main/java/de/thm/arsnova/event/AfterFullUpdateEvent.java
+++ b/src/main/java/de/thm/arsnova/event/AfterFullUpdateEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/AfterPatchEvent.java b/src/main/java/de/thm/arsnova/event/AfterPatchEvent.java
index 7846644fb01f3d61cd17d74b691bf1ad64c4f4a1..c79d2ae31ef49afa199b7cb1974e25316b66508b 100644
--- a/src/main/java/de/thm/arsnova/event/AfterPatchEvent.java
+++ b/src/main/java/de/thm/arsnova/event/AfterPatchEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/AfterUpdateEvent.java b/src/main/java/de/thm/arsnova/event/AfterUpdateEvent.java
index 7920b79d220fc72ce48543d3d9997fdaebb65035..688f9b8eeb6afa9e9189f971357cc0d20a2d31d9 100644
--- a/src/main/java/de/thm/arsnova/event/AfterUpdateEvent.java
+++ b/src/main/java/de/thm/arsnova/event/AfterUpdateEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/BeforeCreationEvent.java b/src/main/java/de/thm/arsnova/event/BeforeCreationEvent.java
index 7235cb4c7518b5e01c70c5a1b146d03756386e11..da000310a0067d6906a77375486e0aebdb22e5fd 100644
--- a/src/main/java/de/thm/arsnova/event/BeforeCreationEvent.java
+++ b/src/main/java/de/thm/arsnova/event/BeforeCreationEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/BeforeDeletionEvent.java b/src/main/java/de/thm/arsnova/event/BeforeDeletionEvent.java
index fac150106ed5900eaa743d038a82f138e8fc9042..c2239b8e4a5cd15910c024e342f02d63f8da7558 100644
--- a/src/main/java/de/thm/arsnova/event/BeforeDeletionEvent.java
+++ b/src/main/java/de/thm/arsnova/event/BeforeDeletionEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/BeforeFullUpdateEvent.java b/src/main/java/de/thm/arsnova/event/BeforeFullUpdateEvent.java
index 8514163395a1679925eecc3dd48c42f76fe0fbbe..5f4b350cda412665d2dfb3f386b507f8cbc298c5 100644
--- a/src/main/java/de/thm/arsnova/event/BeforeFullUpdateEvent.java
+++ b/src/main/java/de/thm/arsnova/event/BeforeFullUpdateEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/BeforePatchEvent.java b/src/main/java/de/thm/arsnova/event/BeforePatchEvent.java
index d6ff6d5caf8d2bddb7fe367165fc6978d337f87f..d2d5070b6712e7aa2e90e932abef30604ff0a489 100644
--- a/src/main/java/de/thm/arsnova/event/BeforePatchEvent.java
+++ b/src/main/java/de/thm/arsnova/event/BeforePatchEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/BeforeUpdateEvent.java b/src/main/java/de/thm/arsnova/event/BeforeUpdateEvent.java
index f5964dce95cff6844548cbb79cecd531cec26d43..450f9ea5f9241a89b9ca35935109e1a819abe092 100644
--- a/src/main/java/de/thm/arsnova/event/BeforeUpdateEvent.java
+++ b/src/main/java/de/thm/arsnova/event/BeforeUpdateEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/CrudEvent.java b/src/main/java/de/thm/arsnova/event/CrudEvent.java
index 368b2cfdb4d1243ef7d7a9eb69bed3dbb8c8133b..cf53ad1ecbbd59611f51552ad5bdcfa6901a9f71 100644
--- a/src/main/java/de/thm/arsnova/event/CrudEvent.java
+++ b/src/main/java/de/thm/arsnova/event/CrudEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/StateChangeEvent.java b/src/main/java/de/thm/arsnova/event/StateChangeEvent.java
index 69b55798117cdac601dfb75723f6d7678daf448e..ccb1d3694ee34ec362eabb4f593a908b874fd011 100644
--- a/src/main/java/de/thm/arsnova/event/StateChangeEvent.java
+++ b/src/main/java/de/thm/arsnova/event/StateChangeEvent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/event/StateEventDispatcher.java b/src/main/java/de/thm/arsnova/event/StateEventDispatcher.java
index e887aac52080444904ec89fb5c0f32767cff0217..0d63bcec6fdde170e53e77b483fbde8e78d4f944 100644
--- a/src/main/java/de/thm/arsnova/event/StateEventDispatcher.java
+++ b/src/main/java/de/thm/arsnova/event/StateEventDispatcher.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import de.thm.arsnova.model.Content;
diff --git a/src/main/java/de/thm/arsnova/model/Answer.java b/src/main/java/de/thm/arsnova/model/Answer.java
index 38eb277f74e71fa0bf9b30ce74a2617d40a4272b..1c338722773e6f31275d07202e5d2eb692f45a5d 100644
--- a/src/main/java/de/thm/arsnova/model/Answer.java
+++ b/src/main/java/de/thm/arsnova/model/Answer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
diff --git a/src/main/java/de/thm/arsnova/model/AnswerStatistics.java b/src/main/java/de/thm/arsnova/model/AnswerStatistics.java
index bf90c2b044154e5e26216e30e459de9824c7b738..611888e41cfa102e15fcd126ea98a2fe05cbc15e 100644
--- a/src/main/java/de/thm/arsnova/model/AnswerStatistics.java
+++ b/src/main/java/de/thm/arsnova/model/AnswerStatistics.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/Attachment.java b/src/main/java/de/thm/arsnova/model/Attachment.java
index a3905ccd907e03202eff5bff03b8df9acb6e63eb..ed72909aea5be1a6228374405fafd7eb452e6f00 100644
--- a/src/main/java/de/thm/arsnova/model/Attachment.java
+++ b/src/main/java/de/thm/arsnova/model/Attachment.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/ChoiceAnswer.java b/src/main/java/de/thm/arsnova/model/ChoiceAnswer.java
index 00d667f7f1291875f6b0074651f2487b05c18f75..8b1245c78fdd19aee0e79df3d119361027d36507 100644
--- a/src/main/java/de/thm/arsnova/model/ChoiceAnswer.java
+++ b/src/main/java/de/thm/arsnova/model/ChoiceAnswer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/ChoiceQuestionContent.java b/src/main/java/de/thm/arsnova/model/ChoiceQuestionContent.java
index b470d8e95179429cc56c33a642fe68a4c4266a5c..4d4f258f90be127c9f8731e02bd5be38f38b9345 100644
--- a/src/main/java/de/thm/arsnova/model/ChoiceQuestionContent.java
+++ b/src/main/java/de/thm/arsnova/model/ChoiceQuestionContent.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/ClientAuthentication.java b/src/main/java/de/thm/arsnova/model/ClientAuthentication.java
index 3d9d22b662bb62c229d0a394062d6db94a169624..06c5d8885f0f92e16fd20c1789ce838b9abad301 100644
--- a/src/main/java/de/thm/arsnova/model/ClientAuthentication.java
+++ b/src/main/java/de/thm/arsnova/model/ClientAuthentication.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/Comment.java b/src/main/java/de/thm/arsnova/model/Comment.java
index f25331a4ab77696de9a0fc2ad1aad85213ed5b00..686903cc5739753ee99eab8acd8216037fe71c56 100644
--- a/src/main/java/de/thm/arsnova/model/Comment.java
+++ b/src/main/java/de/thm/arsnova/model/Comment.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/Content.java b/src/main/java/de/thm/arsnova/model/Content.java
index 64c3ba6079643b8abb88853233d20b047f2c0abe..b015f53de4845522f03a7da48404d5a8e75c213e 100644
--- a/src/main/java/de/thm/arsnova/model/Content.java
+++ b/src/main/java/de/thm/arsnova/model/Content.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
diff --git a/src/main/java/de/thm/arsnova/model/Entity.java b/src/main/java/de/thm/arsnova/model/Entity.java
index 93add05c967e7df2f2a4b4bff56ea2603c004cde..33deacb3e9f7d0e09ac39f627beb82f156b88187 100644
--- a/src/main/java/de/thm/arsnova/model/Entity.java
+++ b/src/main/java/de/thm/arsnova/model/Entity.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/FindQuery.java b/src/main/java/de/thm/arsnova/model/FindQuery.java
index d0364c3b76481df3962111966ddcadfc866c7f5a..51915ebdc5018488a35d9885856a764dc9dde76a 100644
--- a/src/main/java/de/thm/arsnova/model/FindQuery.java
+++ b/src/main/java/de/thm/arsnova/model/FindQuery.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/LogEntry.java b/src/main/java/de/thm/arsnova/model/LogEntry.java
index e66d65c852c818c048ff3c7575a498d201c0cdde..d1e60ea1505f5b4de668ef14839cf22f834135ff 100644
--- a/src/main/java/de/thm/arsnova/model/LogEntry.java
+++ b/src/main/java/de/thm/arsnova/model/LogEntry.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
diff --git a/src/main/java/de/thm/arsnova/model/LoginCredentials.java b/src/main/java/de/thm/arsnova/model/LoginCredentials.java
index 3e90b53a6ba067d5e1d59559574c45fbd5e0c4d4..caeb74a4fb3af734dbec83ddccc04903bfcc6c1b 100644
--- a/src/main/java/de/thm/arsnova/model/LoginCredentials.java
+++ b/src/main/java/de/thm/arsnova/model/LoginCredentials.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/MigrationState.java b/src/main/java/de/thm/arsnova/model/MigrationState.java
index f27bb2f85ed339fb371085e41d8575419d7515e9..96c83265f8ec6c3ad84d7a207f019d3d604a7d5d 100644
--- a/src/main/java/de/thm/arsnova/model/MigrationState.java
+++ b/src/main/java/de/thm/arsnova/model/MigrationState.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/Motd.java b/src/main/java/de/thm/arsnova/model/Motd.java
index d67c19fb15739a29ab1c2f1010eaf1839e8d2e96..ec70d83b83e37a796eb23231b35490547abe2400 100644
--- a/src/main/java/de/thm/arsnova/model/Motd.java
+++ b/src/main/java/de/thm/arsnova/model/Motd.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/Room.java b/src/main/java/de/thm/arsnova/model/Room.java
index d603c1c517c38fb72878c74556ca6761df571190..8ee2bda061c53b1627e2a8dd3a70b12ea036188f 100644
--- a/src/main/java/de/thm/arsnova/model/Room.java
+++ b/src/main/java/de/thm/arsnova/model/Room.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/RoomStatistics.java b/src/main/java/de/thm/arsnova/model/RoomStatistics.java
index c2a94122ce12144b524dfc1ef8961bd7fd228935..da1ebba60c4384e3e9f0255a1629b127fde12f5e 100644
--- a/src/main/java/de/thm/arsnova/model/RoomStatistics.java
+++ b/src/main/java/de/thm/arsnova/model/RoomStatistics.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/TextAnswer.java b/src/main/java/de/thm/arsnova/model/TextAnswer.java
index 2f109c085b31571227c91706310a23ed9369b9eb..a1226fdbb566c82e7ff4bc235d9b9b2e20ead0ab 100644
--- a/src/main/java/de/thm/arsnova/model/TextAnswer.java
+++ b/src/main/java/de/thm/arsnova/model/TextAnswer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/UserProfile.java b/src/main/java/de/thm/arsnova/model/UserProfile.java
index 84926b24e95cc1e5ac92909b41a0af3916cbca8a..1a062ade2166800a3571bd13cb2059fc24b32da5 100644
--- a/src/main/java/de/thm/arsnova/model/UserProfile.java
+++ b/src/main/java/de/thm/arsnova/model/UserProfile.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model;
 
 import com.fasterxml.jackson.annotation.JsonView;
diff --git a/src/main/java/de/thm/arsnova/model/migration/FromV2Migrator.java b/src/main/java/de/thm/arsnova/model/migration/FromV2Migrator.java
index e1ed4369e6ccc025825e18ca42e0b5398e3e7bf2..27605454be43f8dbd968b9551691855cc13ea831 100644
--- a/src/main/java/de/thm/arsnova/model/migration/FromV2Migrator.java
+++ b/src/main/java/de/thm/arsnova/model/migration/FromV2Migrator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/migration/ToV2Migrator.java b/src/main/java/de/thm/arsnova/model/migration/ToV2Migrator.java
index 22ffea137c93846b8414e9df1d15eeff8cbd2266..6cece70c719d7c2c8dd5f9e96845e00edc707645 100644
--- a/src/main/java/de/thm/arsnova/model/migration/ToV2Migrator.java
+++ b/src/main/java/de/thm/arsnova/model/migration/ToV2Migrator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/migration/v2/ClientAuthentication.java b/src/main/java/de/thm/arsnova/model/migration/v2/ClientAuthentication.java
index b4c67c3d3532319333aff3485da06d1c9c5331a0..357ab1091341f3d208e69bdcc4f2b306ee48606d 100644
--- a/src/main/java/de/thm/arsnova/model/migration/v2/ClientAuthentication.java
+++ b/src/main/java/de/thm/arsnova/model/migration/v2/ClientAuthentication.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/serialization/CouchDbDocumentMixIn.java b/src/main/java/de/thm/arsnova/model/serialization/CouchDbDocumentMixIn.java
index 74a16826ea9aeb38608e45f908bfc6f340d090e1..c6bd96d08377bae0dbe67f9860b405b76108bc4d 100644
--- a/src/main/java/de/thm/arsnova/model/serialization/CouchDbDocumentMixIn.java
+++ b/src/main/java/de/thm/arsnova/model/serialization/CouchDbDocumentMixIn.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/model/serialization/FormatAnswerTypeIdResolver.java b/src/main/java/de/thm/arsnova/model/serialization/FormatAnswerTypeIdResolver.java
index c3d48485a50370ef8ee9789f07b0f506fbd6fd0a..903d9ca97daef13dc90d0ee43afcef732bdf64fd 100644
--- a/src/main/java/de/thm/arsnova/model/serialization/FormatAnswerTypeIdResolver.java
+++ b/src/main/java/de/thm/arsnova/model/serialization/FormatAnswerTypeIdResolver.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model.serialization;
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
diff --git a/src/main/java/de/thm/arsnova/model/serialization/FormatContentTypeIdResolver.java b/src/main/java/de/thm/arsnova/model/serialization/FormatContentTypeIdResolver.java
index 9936b8e97aa0d72cbad2a4bbdd57a589685e7c6b..431e17898bf794f3514bf6565ea6a59a7036f569 100644
--- a/src/main/java/de/thm/arsnova/model/serialization/FormatContentTypeIdResolver.java
+++ b/src/main/java/de/thm/arsnova/model/serialization/FormatContentTypeIdResolver.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.model.serialization;
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
diff --git a/src/main/java/de/thm/arsnova/persistence/AnswerRepository.java b/src/main/java/de/thm/arsnova/persistence/AnswerRepository.java
index b25622e5111fa8fa28ac584b5ead46b3b9ae7faf..97f60c10d773afd6d0b2e95a6391b8636257767f 100644
--- a/src/main/java/de/thm/arsnova/persistence/AnswerRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/AnswerRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/LogEntryRepository.java b/src/main/java/de/thm/arsnova/persistence/LogEntryRepository.java
index 49d91f5113e6e1ffd4ce75f5f97ea1033a1db241..a788c01bfa2b87557178ac40bd3f90839364b955 100644
--- a/src/main/java/de/thm/arsnova/persistence/LogEntryRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/LogEntryRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/MotdRepository.java b/src/main/java/de/thm/arsnova/persistence/MotdRepository.java
index f320bbe66d3e6c15e51803f72792649c8706f5b9..e00a88cd883d9ddce96eecfc9f91a99d1e071da4 100644
--- a/src/main/java/de/thm/arsnova/persistence/MotdRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/MotdRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/RoomRepository.java b/src/main/java/de/thm/arsnova/persistence/RoomRepository.java
index 1d61c33c4182a5a0b9da49c429d2a11752df25dd..f83e12851b19a8cec4ed57c410b528cb88fe608c 100644
--- a/src/main/java/de/thm/arsnova/persistence/RoomRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/RoomRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/SessionStatisticsRepository.java b/src/main/java/de/thm/arsnova/persistence/SessionStatisticsRepository.java
index 7812c1469c5aa3afe9d4f71a5821d0bd21ee775a..0e407aaf98e1ed1d390e4d2730b92c0d9556d138 100644
--- a/src/main/java/de/thm/arsnova/persistence/SessionStatisticsRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/SessionStatisticsRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence;
 
 import de.thm.arsnova.model.Room;
diff --git a/src/main/java/de/thm/arsnova/persistence/StatisticsRepository.java b/src/main/java/de/thm/arsnova/persistence/StatisticsRepository.java
index 03e7be384ea81fdfc757eea7e71d89e33a0ef976..015eff7de307c9a1b295125f5454ef87a370f310 100644
--- a/src/main/java/de/thm/arsnova/persistence/StatisticsRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/StatisticsRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence;
 
 import de.thm.arsnova.model.Statistics;
diff --git a/src/main/java/de/thm/arsnova/persistence/UserRepository.java b/src/main/java/de/thm/arsnova/persistence/UserRepository.java
index 61ab8b2589d247bbfebbb1dd98eab888cb6193d3..7abcd9e67241e17e32a83530bf44b563f625dfc5 100644
--- a/src/main/java/de/thm/arsnova/persistence/UserRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/UserRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAnswerRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAnswerRepository.java
index 58a1956827e6a2dcc59c7a69599bdb7c04d22d06..528c13c098f0c4657e9774b7bb08384ab58d31db 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAnswerRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAnswerRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import com.fasterxml.jackson.databind.JsonNode;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAttachmentRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAttachmentRepository.java
index 409b9170da01da87752f9f3019fb626e3eb0385b..5bc66743eecfd00b0dada4b0e09978fffc410129 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAttachmentRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbAttachmentRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import de.thm.arsnova.model.Attachment;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCommentRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCommentRepository.java
index 8a355c41626579d6c9091dd148015086329e13ae..2f3202d55c4975f010cf57506d7b47a82b77ebaa 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCommentRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCommentRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import com.fasterxml.jackson.databind.JsonNode;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbContentRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbContentRepository.java
index a475cb3c7be60cf249f1a4379cdb0f2999eb5c7b..4e8e9298f61537b1655cbcaa977ee740bc10abc6 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbContentRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbContentRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import de.thm.arsnova.model.Content;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCrudRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCrudRepository.java
index 06da52e30213d204777eebed6bdbc8e8b9bbd786..1d1bee41b45f70d104320bd9de4c3f536c087bb4 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCrudRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbCrudRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbInitializer.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbInitializer.java
index 697ffc06d95fcda5e40c9e37b94221adb01009b5..4da1e17f52dcb8a9de3b47308c67eb6be4ef32a8 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbInitializer.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbInitializer.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbLogEntryRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbLogEntryRepository.java
index 1af116fa21434b770b276c1c8fbb495f2c817436..0c7b4fbe3659464c0e6046bf5048f633bd415a58 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbLogEntryRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbLogEntryRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbMotdRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbMotdRepository.java
index 6d1e01fa896362793b4a26b0658455cece64ed09..c39e96a69a0228ffefb0d2a9ad47dcac940df60c 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbMotdRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbMotdRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbRoomRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbRoomRepository.java
index 9986c57c6c20f73fb8b1f0be86eb25847c10b4ac..8279341110862f3cbe6f1bd18775672f5673f39a 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbRoomRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbRoomRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbSessionStatisticsRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbSessionStatisticsRepository.java
index 4a1b49c7e936debbc1ee2dfb28acad6710e778a9..98edfb769e062afb63c4369bc8b84e15c627e705 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbSessionStatisticsRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbSessionStatisticsRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import com.fasterxml.jackson.databind.JsonNode;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbStatisticsRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbStatisticsRepository.java
index e45c3dc7e83f5bc47bd27ee1f6a510de566d995f..3b927de73f621f0adaee44c280785f3dd1bc351c 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbStatisticsRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbStatisticsRepository.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb;
 
 import de.thm.arsnova.model.Statistics;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbUserRepository.java b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbUserRepository.java
index f9cf3bcb74e3c97b58d390560c31a53edfa34863..adf972390065e9047fa3a023bc6dd37bf139613c 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbUserRepository.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/CouchDbUserRepository.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrateFromLegacyCondition.java b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrateFromLegacyCondition.java
index b81b9369af53afc9065b117a2cdc126011df19c6..9bd2aec279d5bdce075a43b4bc8bbf021ef164a8 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrateFromLegacyCondition.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrateFromLegacyCondition.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb.migrations;
 
 import org.springframework.context.annotation.Condition;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/Migration.java b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/Migration.java
index e2d43a08a89f080e63df63571fad495be53d15ca..9eb4deacca4f4b53ac24e76edbec3e4a5bc22222 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/Migration.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/Migration.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrationExecutor.java b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrationExecutor.java
index ff74e2356d6f237ecaf2202c573e31d95381556e..7dfd9fc0363b97b7506f56ad7fd724dbe1b15abd 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrationExecutor.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/MigrationExecutor.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/V2ToV3Migration.java b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/V2ToV3Migration.java
index 37b57cedfd8b361b963e7a1c227e6b0a133c328e..4dcf7462d0828e374e85bcb1463414689e5e4bb2 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/V2ToV3Migration.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/migrations/V2ToV3Migration.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoCouchDbConnector.java b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoCouchDbConnector.java
index b8f61d21feb9955069481d14c30225fa6632ca26..c6bf1fac906cb2795b6416fbf589fb9e317be05b 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoCouchDbConnector.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoCouchDbConnector.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb.support;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoQueryResultParser.java b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoQueryResultParser.java
index c8fd9289ec5512d9f440f1d0e5cfe499205d895b..5841737af97628eccf33b3114fc323587a6bb2d0 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoQueryResultParser.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoQueryResultParser.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb.support;
 
 import com.fasterxml.jackson.core.JsonParser;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoResponseHandler.java b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoResponseHandler.java
index 84ae2275c7781d5330d61954e23a39523e0db5f5..1a0d59d99b4a5aa036c3c7a3bb987ded470bf8a3 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoResponseHandler.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/support/MangoResponseHandler.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb.support;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
diff --git a/src/main/java/de/thm/arsnova/persistence/couchdb/support/PagedMangoResponse.java b/src/main/java/de/thm/arsnova/persistence/couchdb/support/PagedMangoResponse.java
index a8f4b3793a4c902b78d3a5f17cf904f0c2e670ee..c509de579a85d83c26ab70dd518c81668f12e63f 100644
--- a/src/main/java/de/thm/arsnova/persistence/couchdb/support/PagedMangoResponse.java
+++ b/src/main/java/de/thm/arsnova/persistence/couchdb/support/PagedMangoResponse.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.persistence.couchdb.support;
 
 import java.util.List;
diff --git a/src/main/java/de/thm/arsnova/security/GuestUserDetailsService.java b/src/main/java/de/thm/arsnova/security/GuestUserDetailsService.java
index 5596de1c14cefc4e40bc8c870efab3ce1d18bc88..e274c34bd9553f86c2db2f2f1a0c2a02b48f6d63 100644
--- a/src/main/java/de/thm/arsnova/security/GuestUserDetailsService.java
+++ b/src/main/java/de/thm/arsnova/security/GuestUserDetailsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/security/User.java b/src/main/java/de/thm/arsnova/security/User.java
index 80efecfc24df6fa7891479d98c2710b2ce2464d9..2c40990030ad1baf4ac466cf4f873121da00910c 100644
--- a/src/main/java/de/thm/arsnova/security/User.java
+++ b/src/main/java/de/thm/arsnova/security/User.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/security/jwt/JwtAuthenticationProvider.java b/src/main/java/de/thm/arsnova/security/jwt/JwtAuthenticationProvider.java
index 569a4df5f46c8288a3290a80d7dde9726b21bc6a..58725b3f94f52f807294b8f3053f3787b96f03b1 100644
--- a/src/main/java/de/thm/arsnova/security/jwt/JwtAuthenticationProvider.java
+++ b/src/main/java/de/thm/arsnova/security/jwt/JwtAuthenticationProvider.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.security.jwt;
 
 import de.thm.arsnova.security.User;
diff --git a/src/main/java/de/thm/arsnova/security/jwt/JwtService.java b/src/main/java/de/thm/arsnova/security/jwt/JwtService.java
index 204a60f55eb630064e4f38e010fa2d59125aad85..8592d0e8173ee88322013175bc7bb627c50ebcdc 100644
--- a/src/main/java/de/thm/arsnova/security/jwt/JwtService.java
+++ b/src/main/java/de/thm/arsnova/security/jwt/JwtService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.security.jwt;
 
 import com.auth0.jwt.JWT;
diff --git a/src/main/java/de/thm/arsnova/security/jwt/JwtToken.java b/src/main/java/de/thm/arsnova/security/jwt/JwtToken.java
index ecce14b5bebb2669ab1007b076a6cb858f2538dc..2117214e299e5bfd94b277464a800b8405fd1709 100644
--- a/src/main/java/de/thm/arsnova/security/jwt/JwtToken.java
+++ b/src/main/java/de/thm/arsnova/security/jwt/JwtToken.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.security.jwt;
 
 import de.thm.arsnova.security.User;
diff --git a/src/main/java/de/thm/arsnova/security/jwt/JwtTokenFilter.java b/src/main/java/de/thm/arsnova/security/jwt/JwtTokenFilter.java
index caa939c037ee3ac7870875201ae24da510e80678..c40c92e4819524eeb54d2757580a74b120f25b2f 100644
--- a/src/main/java/de/thm/arsnova/security/jwt/JwtTokenFilter.java
+++ b/src/main/java/de/thm/arsnova/security/jwt/JwtTokenFilter.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.security.jwt;
 
 import org.slf4j.Logger;
diff --git a/src/main/java/de/thm/arsnova/security/pac4j/OAuthToken.java b/src/main/java/de/thm/arsnova/security/pac4j/OAuthToken.java
index 994bf74b66fe9e87e66f1636db7563d9fdf21305..31888b32627425ac4121eaf93eba3cb426cf3258 100644
--- a/src/main/java/de/thm/arsnova/security/pac4j/OAuthToken.java
+++ b/src/main/java/de/thm/arsnova/security/pac4j/OAuthToken.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/security/pac4j/OauthAuthenticationProvider.java b/src/main/java/de/thm/arsnova/security/pac4j/OauthAuthenticationProvider.java
index 32262737820e4f81f07795424b3ecc191cf4b81e..f1708d894391e04fb36f9e49dad0ad86a1e5b2fe 100644
--- a/src/main/java/de/thm/arsnova/security/pac4j/OauthAuthenticationProvider.java
+++ b/src/main/java/de/thm/arsnova/security/pac4j/OauthAuthenticationProvider.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/security/pac4j/OauthCallbackFilter.java b/src/main/java/de/thm/arsnova/security/pac4j/OauthCallbackFilter.java
index 49d3a03b4556b07d9b1bf5f195cdea780f3f7c14..4746e07cb466735261561fc340df4d79b2e8735e 100644
--- a/src/main/java/de/thm/arsnova/security/pac4j/OauthCallbackFilter.java
+++ b/src/main/java/de/thm/arsnova/security/pac4j/OauthCallbackFilter.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/security/pac4j/OauthUserDetailsService.java b/src/main/java/de/thm/arsnova/security/pac4j/OauthUserDetailsService.java
index cb61fa8032fbb60b76065c18c9137d2deaad9040..a0d80eacaea7eb53475bcfebbde709f8fa0d441b 100644
--- a/src/main/java/de/thm/arsnova/security/pac4j/OauthUserDetailsService.java
+++ b/src/main/java/de/thm/arsnova/security/pac4j/OauthUserDetailsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/AnswerService.java b/src/main/java/de/thm/arsnova/service/AnswerService.java
index cbfb4fa0fc0ced69efd9a970ff1bec06b59486ba..58cd210a515068f283f9757910cbd13fed08b9c9 100644
--- a/src/main/java/de/thm/arsnova/service/AnswerService.java
+++ b/src/main/java/de/thm/arsnova/service/AnswerService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Answer;
diff --git a/src/main/java/de/thm/arsnova/service/AnswerServiceImpl.java b/src/main/java/de/thm/arsnova/service/AnswerServiceImpl.java
index ceccd9b48b66eb241671b629162f620cda335953..021e0b1d747bb9b5bae57e08ad3393c588ff0710 100644
--- a/src/main/java/de/thm/arsnova/service/AnswerServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/AnswerServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/AttachmentService.java b/src/main/java/de/thm/arsnova/service/AttachmentService.java
index cb49b4861fe6f6be556f5fd32c31244bd792b8b7..cae650099ae13869853d3be82fd7406a5aeacf86 100644
--- a/src/main/java/de/thm/arsnova/service/AttachmentService.java
+++ b/src/main/java/de/thm/arsnova/service/AttachmentService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Attachment;
diff --git a/src/main/java/de/thm/arsnova/service/AttachmentServiceImpl.java b/src/main/java/de/thm/arsnova/service/AttachmentServiceImpl.java
index 6b2cc2edfe6c84a9e02e298e1b6b07998a8c6d70..ad8b4bae5419dd607e6da57bb20f488883e974ba 100644
--- a/src/main/java/de/thm/arsnova/service/AttachmentServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/AttachmentServiceImpl.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Attachment;
diff --git a/src/main/java/de/thm/arsnova/service/CommentFindQueryService.java b/src/main/java/de/thm/arsnova/service/CommentFindQueryService.java
index 1f5a8de9b7b4da65aae115dc215ad14a703060a1..acdecead342abff235da81e59cb516675acee607 100644
--- a/src/main/java/de/thm/arsnova/service/CommentFindQueryService.java
+++ b/src/main/java/de/thm/arsnova/service/CommentFindQueryService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/CommentService.java b/src/main/java/de/thm/arsnova/service/CommentService.java
index 5c0202e3210517b5349185075ce7431fc1498995..336f0d578ada622057ff73e130d9ae8ac0815813 100644
--- a/src/main/java/de/thm/arsnova/service/CommentService.java
+++ b/src/main/java/de/thm/arsnova/service/CommentService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Comment;
diff --git a/src/main/java/de/thm/arsnova/service/CommentServiceImpl.java b/src/main/java/de/thm/arsnova/service/CommentServiceImpl.java
index 0216263e105477a704ff46d3ad4fa6f2adf1106c..1613089eedad504da7aa64e79e7081e09acc4d5a 100644
--- a/src/main/java/de/thm/arsnova/service/CommentServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/CommentServiceImpl.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.event.BeforeDeletionEvent;
diff --git a/src/main/java/de/thm/arsnova/service/ContentFindQueryService.java b/src/main/java/de/thm/arsnova/service/ContentFindQueryService.java
index 8bbc43b8957236ed54cf85618232a494c4607158..c75a5c86c57540880f8bf683f007771776e5255a 100644
--- a/src/main/java/de/thm/arsnova/service/ContentFindQueryService.java
+++ b/src/main/java/de/thm/arsnova/service/ContentFindQueryService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/ContentService.java b/src/main/java/de/thm/arsnova/service/ContentService.java
index 355377a440aa1f33c293cc174663a3e66229e66f..35fc2d644737491ccf7ec25e7e8892961a0d358c 100644
--- a/src/main/java/de/thm/arsnova/service/ContentService.java
+++ b/src/main/java/de/thm/arsnova/service/ContentService.java
@@ -1,23 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
- *
- * ARSnova Backend is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * ARSnova Backend is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.	 If not, see <http://www.gnu.org/licenses/>.
- */
-/*
- * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/ContentServiceImpl.java b/src/main/java/de/thm/arsnova/service/ContentServiceImpl.java
index 4f8cf552a46dd5a9b5f2fadbbd00d10536130557..4418f2511c20dc946cf3a079e340696333b82acb 100644
--- a/src/main/java/de/thm/arsnova/service/ContentServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/ContentServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/DefaultEntityServiceImpl.java b/src/main/java/de/thm/arsnova/service/DefaultEntityServiceImpl.java
index abe3c0d65c82a675742ab1d130f6c2114c4b251b..b1a597243ddcae1a9b00974a5c13ea07b219ab7a 100644
--- a/src/main/java/de/thm/arsnova/service/DefaultEntityServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/DefaultEntityServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/EntityService.java b/src/main/java/de/thm/arsnova/service/EntityService.java
index 708612479555aa8e093861dc5a605a5010b53809..51bb56a7ef2d99dee7d19f05c3a80f464d341cfe 100644
--- a/src/main/java/de/thm/arsnova/service/EntityService.java
+++ b/src/main/java/de/thm/arsnova/service/EntityService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/FeedbackServiceImpl.java b/src/main/java/de/thm/arsnova/service/FeedbackServiceImpl.java
index b542ec44c93b21d52664c224b71e7af12b7adbe7..5cb4c03d10a000237ba730667ccb9907d862d328 100644
--- a/src/main/java/de/thm/arsnova/service/FeedbackServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/FeedbackServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/FeedbackStorageService.java b/src/main/java/de/thm/arsnova/service/FeedbackStorageService.java
index be73cedcb58bd1ef7575f87a609e86fac31bf4a2..d2add366c5101acad1bc2dd565bb71f142c666a9 100644
--- a/src/main/java/de/thm/arsnova/service/FeedbackStorageService.java
+++ b/src/main/java/de/thm/arsnova/service/FeedbackStorageService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Feedback;
diff --git a/src/main/java/de/thm/arsnova/service/FeedbackStorageServiceImpl.java b/src/main/java/de/thm/arsnova/service/FeedbackStorageServiceImpl.java
index 47c8ad10ec3b4b855eaecb3f020522dfcae03f00..e85713d688e736cc97bf36660c721d1c68a0d689 100644
--- a/src/main/java/de/thm/arsnova/service/FeedbackStorageServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/FeedbackStorageServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/FindQueryService.java b/src/main/java/de/thm/arsnova/service/FindQueryService.java
index 09f3aae1bfe8b003fc66fb125cff0b4922706451..24d4e8e40baf3725f83d40e349ce4240df1c9a70 100644
--- a/src/main/java/de/thm/arsnova/service/FindQueryService.java
+++ b/src/main/java/de/thm/arsnova/service/FindQueryService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/MotdServiceImpl.java b/src/main/java/de/thm/arsnova/service/MotdServiceImpl.java
index 53dcf4fb6198b5e9fe1151ef72be5ce4350208e2..589d0bdaa3181e311aa61b856fd8db97c59a9953 100644
--- a/src/main/java/de/thm/arsnova/service/MotdServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/MotdServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/RoomFindQueryService.java b/src/main/java/de/thm/arsnova/service/RoomFindQueryService.java
index 80edfe8eb078b2628add93b0a1fe8712bbd4f2a8..de354a220501cad762d4c9cb388e32ed2c0f4648 100644
--- a/src/main/java/de/thm/arsnova/service/RoomFindQueryService.java
+++ b/src/main/java/de/thm/arsnova/service/RoomFindQueryService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/RoomService.java b/src/main/java/de/thm/arsnova/service/RoomService.java
index a5c676ca0fd24b8a88b5619592e0e6f916f2ec11..31958c51b77d733601e63554c830b38e2fd0ee68 100644
--- a/src/main/java/de/thm/arsnova/service/RoomService.java
+++ b/src/main/java/de/thm/arsnova/service/RoomService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/RoomServiceImpl.java b/src/main/java/de/thm/arsnova/service/RoomServiceImpl.java
index 3fe18f97f8299a219fa4609129c4eb17c97eed90..5f8ced97fd70cb66878fd7a6b4c493192320cb93 100644
--- a/src/main/java/de/thm/arsnova/service/RoomServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/RoomServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/StatusService.java b/src/main/java/de/thm/arsnova/service/StatusService.java
index 7052dfb9af34b6ac4d2b8b7bce9b407d115fabaf..3ab8b0586df193289117ee08640a442689bd034c 100644
--- a/src/main/java/de/thm/arsnova/service/StatusService.java
+++ b/src/main/java/de/thm/arsnova/service/StatusService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/StatusServiceImpl.java b/src/main/java/de/thm/arsnova/service/StatusServiceImpl.java
index d1ca23dd2111fba6281712a0a927aff02e7b3105..94004233e3ec966cd22fa0ec63681bb5d87e5045 100644
--- a/src/main/java/de/thm/arsnova/service/StatusServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/StatusServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/TimerService.java b/src/main/java/de/thm/arsnova/service/TimerService.java
index caf4372cb2d317fc131db04ef689fb45befec471..972de6ea8393f3c6c8b7e81830c4fc2dedbcda5e 100644
--- a/src/main/java/de/thm/arsnova/service/TimerService.java
+++ b/src/main/java/de/thm/arsnova/service/TimerService.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 public interface TimerService {
diff --git a/src/main/java/de/thm/arsnova/service/TimerServiceImpl.java b/src/main/java/de/thm/arsnova/service/TimerServiceImpl.java
index 9034ccc720d40ed7a4653a0634c02994ae961cac..5c18e19242720e19a755f746a22fd899c96e1922 100644
--- a/src/main/java/de/thm/arsnova/service/TimerServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/TimerServiceImpl.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import de.thm.arsnova.model.Content;
diff --git a/src/main/java/de/thm/arsnova/service/UserService.java b/src/main/java/de/thm/arsnova/service/UserService.java
index 57422647aa18c26a221ccfbe122ba93c9fdb6076..331afcf2c6675a53808a1f1f11d08504af0c4997 100644
--- a/src/main/java/de/thm/arsnova/service/UserService.java
+++ b/src/main/java/de/thm/arsnova/service/UserService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/UserServiceImpl.java b/src/main/java/de/thm/arsnova/service/UserServiceImpl.java
index dfa71b0c842f08dfd3e4473ea8779a1a93eeb626..8cb27b005b83ade89f57fcb062c9136c5e595ff3 100644
--- a/src/main/java/de/thm/arsnova/service/UserServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/service/UserServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/score/ScoreCalculator.java b/src/main/java/de/thm/arsnova/service/score/ScoreCalculator.java
index ce03ccb4187de94957c455738c05578fab0a314c..f835fd1af26fce56bcac76a941db25a273dc3981 100644
--- a/src/main/java/de/thm/arsnova/service/score/ScoreCalculator.java
+++ b/src/main/java/de/thm/arsnova/service/score/ScoreCalculator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/score/ScoreCalculatorFactoryImpl.java b/src/main/java/de/thm/arsnova/service/score/ScoreCalculatorFactoryImpl.java
index a9b68b967b1092e7945a163d4b00fac0a4fdd2f1..fa2a595e84ac37a6709bba721c4d1d1307659735 100644
--- a/src/main/java/de/thm/arsnova/service/score/ScoreCalculatorFactoryImpl.java
+++ b/src/main/java/de/thm/arsnova/service/score/ScoreCalculatorFactoryImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/service/score/VariantScoreCalculator.java b/src/main/java/de/thm/arsnova/service/score/VariantScoreCalculator.java
index f7266b9524e88d0f0db2e848129527163173ae06..a4ad876db18b071fc7275be0346b374a2317bfc9 100644
--- a/src/main/java/de/thm/arsnova/service/score/VariantScoreCalculator.java
+++ b/src/main/java/de/thm/arsnova/service/score/VariantScoreCalculator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/web/InternalEntityAspect.java b/src/main/java/de/thm/arsnova/web/InternalEntityAspect.java
index 3a59bedc35335f711e3dd95180197007895522fb..54e4142a613c4418ce15539783b9a7507de89208 100644
--- a/src/main/java/de/thm/arsnova/web/InternalEntityAspect.java
+++ b/src/main/java/de/thm/arsnova/web/InternalEntityAspect.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.web;
 
 import de.thm.arsnova.model.Entity;
diff --git a/src/main/java/de/thm/arsnova/web/MaintenanceModeFilter.java b/src/main/java/de/thm/arsnova/web/MaintenanceModeFilter.java
index 7d2e3bc6f1768a628f79bd8f537db61b590b4cb5..7577faa346a05fe50d582db63fb9049db0526c6d 100644
--- a/src/main/java/de/thm/arsnova/web/MaintenanceModeFilter.java
+++ b/src/main/java/de/thm/arsnova/web/MaintenanceModeFilter.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/web/PathApiVersionContentNegotiationStrategy.java b/src/main/java/de/thm/arsnova/web/PathApiVersionContentNegotiationStrategy.java
index 3ded812830af479caf5ba08548f7e99ed221dbc1..3bacee85d2934286d226e6c5f9a7567b20c21085 100644
--- a/src/main/java/de/thm/arsnova/web/PathApiVersionContentNegotiationStrategy.java
+++ b/src/main/java/de/thm/arsnova/web/PathApiVersionContentNegotiationStrategy.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.web;
 
 import de.thm.arsnova.config.AppConfig;
diff --git a/src/main/java/de/thm/arsnova/web/V2ContentTypeOverrideFilter.java b/src/main/java/de/thm/arsnova/web/V2ContentTypeOverrideFilter.java
index 8e03109caf38ea3b33527484d1719b236c6d579e..f0656902770eb03e0e887c6a5ad8ca9604b48427 100644
--- a/src/main/java/de/thm/arsnova/web/V2ContentTypeOverrideFilter.java
+++ b/src/main/java/de/thm/arsnova/web/V2ContentTypeOverrideFilter.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.web;
 
 import de.thm.arsnova.config.AppConfig;
diff --git a/src/main/java/de/thm/arsnova/websocket/ArsnovaSocketioServerImpl.java b/src/main/java/de/thm/arsnova/websocket/ArsnovaSocketioServerImpl.java
index 874ea935bc869328fb07a3d4893dcb63ab963cc1..7211c94505589dd17b7e0de894c34b90a0dbd26a 100644
--- a/src/main/java/de/thm/arsnova/websocket/ArsnovaSocketioServerImpl.java
+++ b/src/main/java/de/thm/arsnova/websocket/ArsnovaSocketioServerImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/main/java/de/thm/arsnova/websocket/WebsocketAuthenticationAspect.java b/src/main/java/de/thm/arsnova/websocket/WebsocketAuthenticationAspect.java
index 23fad2da876bfd00ca20e86a958bda30003a5c90..6b0abc8bb13926a77afc0789867bc0a66fb8fcac 100644
--- a/src/main/java/de/thm/arsnova/websocket/WebsocketAuthenticationAspect.java
+++ b/src/main/java/de/thm/arsnova/websocket/WebsocketAuthenticationAspect.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/config/TestAppConfig.java b/src/test/java/de/thm/arsnova/config/TestAppConfig.java
index 2d40e7060ae7a74078e5916defefef680a60c5ec..e68eb84ff01c5ae3537a8a63fedbae41ee374fbc 100644
--- a/src/test/java/de/thm/arsnova/config/TestAppConfig.java
+++ b/src/test/java/de/thm/arsnova/config/TestAppConfig.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.config;
 
 import de.thm.arsnova.persistence.UserRepository;
diff --git a/src/test/java/de/thm/arsnova/config/TestPersistanceConfig.java b/src/test/java/de/thm/arsnova/config/TestPersistanceConfig.java
index 9acd9adfecde08a8a17ded79f7a6624182cdfb74..0198395ee9662471338274e85e2bb585cb247a1b 100644
--- a/src/test/java/de/thm/arsnova/config/TestPersistanceConfig.java
+++ b/src/test/java/de/thm/arsnova/config/TestPersistanceConfig.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.config;
 
 import de.thm.arsnova.persistence.*;
diff --git a/src/test/java/de/thm/arsnova/event/StateEventDispatcherTest.java b/src/test/java/de/thm/arsnova/event/StateEventDispatcherTest.java
index e1b082e6f78b2f495174db3d5820385700ad72b1..a1badcde87da2f53c8dce03969578acdb9e90809 100644
--- a/src/test/java/de/thm/arsnova/event/StateEventDispatcherTest.java
+++ b/src/test/java/de/thm/arsnova/event/StateEventDispatcherTest.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.event;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
diff --git a/src/test/java/de/thm/arsnova/model/EntityTest.java b/src/test/java/de/thm/arsnova/model/EntityTest.java
index 01d8d0e7426e171833fb99cc1dcd4a2b2d37c437..275eae31f2ec8634ac64d0706369c73efd66e5a3 100644
--- a/src/test/java/de/thm/arsnova/model/EntityTest.java
+++ b/src/test/java/de/thm/arsnova/model/EntityTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/model/migration/FromV2MigratorTest.java b/src/test/java/de/thm/arsnova/model/migration/FromV2MigratorTest.java
index fec6f4954b14cf12c519d7168a88b9faf34562c1..3b1f2ba35215e8bb337e79988a35c229b63670aa 100644
--- a/src/test/java/de/thm/arsnova/model/migration/FromV2MigratorTest.java
+++ b/src/test/java/de/thm/arsnova/model/migration/FromV2MigratorTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/model/migration/ToV2MigratorTest.java b/src/test/java/de/thm/arsnova/model/migration/ToV2MigratorTest.java
index d52d3eb0ce013c19764324ededd5571018127a14..8211fec14e35b74c5a004c69572076e677c830b3 100644
--- a/src/test/java/de/thm/arsnova/model/migration/ToV2MigratorTest.java
+++ b/src/test/java/de/thm/arsnova/model/migration/ToV2MigratorTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/service/DefaultEntityServiceImplTest.java b/src/test/java/de/thm/arsnova/service/DefaultEntityServiceImplTest.java
index ac97ac25c1b6ccdd3c614543b4938b0ad65ee71c..e7bb95c41b7880b942ee4605cae229fd24f1436d 100644
--- a/src/test/java/de/thm/arsnova/service/DefaultEntityServiceImplTest.java
+++ b/src/test/java/de/thm/arsnova/service/DefaultEntityServiceImplTest.java
@@ -1,3 +1,20 @@
+/*
+ * This file is part of ARSnova Backend.
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
+ *
+ * ARSnova Backend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * ARSnova Backend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package de.thm.arsnova.service;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
diff --git a/src/test/java/de/thm/arsnova/service/StubUserService.java b/src/test/java/de/thm/arsnova/service/StubUserService.java
index c1df90a5cda6142a8f817237c8fb866f783cf48d..e56dde169d2b92cf2518519f4ca22aa34aab89eb 100644
--- a/src/test/java/de/thm/arsnova/service/StubUserService.java
+++ b/src/test/java/de/thm/arsnova/service/StubUserService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team and Contributors
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/test/context/support/WithMockUser.java b/src/test/java/de/thm/arsnova/test/context/support/WithMockUser.java
index bcbcece44ebeed297b1d6b7df6dcab94c443122c..db001d4e05bcdd4ac954fb43de13f8b668b9fbda 100644
--- a/src/test/java/de/thm/arsnova/test/context/support/WithMockUser.java
+++ b/src/test/java/de/thm/arsnova/test/context/support/WithMockUser.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/src/test/java/de/thm/arsnova/test/context/support/WithMockUserSecurityContextFactory.java b/src/test/java/de/thm/arsnova/test/context/support/WithMockUserSecurityContextFactory.java
index b158e109fac92353c91a2fc29e423eb3fda885e3..3da5ee7cc00c866e772f0e29fa4d15966de15fd4 100644
--- a/src/test/java/de/thm/arsnova/test/context/support/WithMockUserSecurityContextFactory.java
+++ b/src/test/java/de/thm/arsnova/test/context/support/WithMockUserSecurityContextFactory.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2018 The ARSnova Team
+ * Copyright (C) 2012-2019 The ARSnova Team and Contributors
  *
  * ARSnova Backend is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by