diff --git a/src/main/java/de/thm/arsnova/CASLogoutSuccessHandler.java b/src/main/java/de/thm/arsnova/CASLogoutSuccessHandler.java
index 13eb9343443ed2cd00203d11f3d3c2d0562761b8..41d89d18f26f43b2df8bf481ab2a7f0a83caa306 100644
--- a/src/main/java/de/thm/arsnova/CASLogoutSuccessHandler.java
+++ b/src/main/java/de/thm/arsnova/CASLogoutSuccessHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/CasUserDetailsService.java b/src/main/java/de/thm/arsnova/CasUserDetailsService.java
index 9261648fb99860ff9a37c1509dbf4e427dd2e50c..480b2f058b7e3654f70817061a31f0bf4b7079cc 100644
--- a/src/main/java/de/thm/arsnova/CasUserDetailsService.java
+++ b/src/main/java/de/thm/arsnova/CasUserDetailsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/FeedbackStorage.java b/src/main/java/de/thm/arsnova/FeedbackStorage.java
index ee9abd74deb271ab80623730e454fed289efda85..1d1dba0ae4a2da8c2fe2b064476ac5e432b56dea 100644
--- a/src/main/java/de/thm/arsnova/FeedbackStorage.java
+++ b/src/main/java/de/thm/arsnova/FeedbackStorage.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/ImageUtils.java b/src/main/java/de/thm/arsnova/ImageUtils.java
index 6349cc8444a3800897cbb49275e848bfbcd10643..26b8b6f87f1f59bf93b9909f2e2d72196b8e99bd 100644
--- a/src/main/java/de/thm/arsnova/ImageUtils.java
+++ b/src/main/java/de/thm/arsnova/ImageUtils.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/LoginAuthenticationFailureHandler.java b/src/main/java/de/thm/arsnova/LoginAuthenticationFailureHandler.java
index f3f4298751c83d7fa410272ff28bb3a729216453..6cf98cba50d708198c991434463531f9f0b9ab8b 100644
--- a/src/main/java/de/thm/arsnova/LoginAuthenticationFailureHandler.java
+++ b/src/main/java/de/thm/arsnova/LoginAuthenticationFailureHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/LoginAuthenticationSucessHandler.java b/src/main/java/de/thm/arsnova/LoginAuthenticationSucessHandler.java
index 714578ee6ef33665a588ae9443b495da91a8c2d3..c90d8d34888ccf9289db2c2a9c9b48689a83ab4a 100644
--- a/src/main/java/de/thm/arsnova/LoginAuthenticationSucessHandler.java
+++ b/src/main/java/de/thm/arsnova/LoginAuthenticationSucessHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/PaginationListDecorator.java b/src/main/java/de/thm/arsnova/PaginationListDecorator.java
index 6f9fcf448f962b93d83d52b59f2a5b593c83a479..8def86725ccb7cf227b4ad2639df2a2f9da5e552 100644
--- a/src/main/java/de/thm/arsnova/PaginationListDecorator.java
+++ b/src/main/java/de/thm/arsnova/PaginationListDecorator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/aop/RangeAspect.java b/src/main/java/de/thm/arsnova/aop/RangeAspect.java
index 161199ef57c71091b5a2d396566d9372361380d2..cced5b5c8bcd353d75781486c7fdfea9813b9c4f 100644
--- a/src/main/java/de/thm/arsnova/aop/RangeAspect.java
+++ b/src/main/java/de/thm/arsnova/aop/RangeAspect.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/aop/UserSessionAspect.java b/src/main/java/de/thm/arsnova/aop/UserSessionAspect.java
index 80bfd4dc2407323d54a7b5a30f8cebd6ab259a55..be500d19d0bb4fc99115110db63c79e71568f17d 100644
--- a/src/main/java/de/thm/arsnova/aop/UserSessionAspect.java
+++ b/src/main/java/de/thm/arsnova/aop/UserSessionAspect.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/cache/CacheBustListener.java b/src/main/java/de/thm/arsnova/cache/CacheBustListener.java
index db365d064524b497694501240ab02a40e9d825d7..185a8a78b8c3af1b96ec833e94d3accdc655a910 100644
--- a/src/main/java/de/thm/arsnova/cache/CacheBustListener.java
+++ b/src/main/java/de/thm/arsnova/cache/CacheBustListener.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/cache/CacheBuster.java b/src/main/java/de/thm/arsnova/cache/CacheBuster.java
index 913c36b24ae1d60efca90d156a85a2bbcc197fb3..d736e42fab9ae29adc5159d8819999904b1ed1cb 100644
--- a/src/main/java/de/thm/arsnova/cache/CacheBuster.java
+++ b/src/main/java/de/thm/arsnova/cache/CacheBuster.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/cache/ICacheBuster.java b/src/main/java/de/thm/arsnova/cache/ICacheBuster.java
index ab937cdd3354799182bf69959f94e03caeb8e376..2aa946e30727bffc8a96a77ee87ebbffcd6a6b3d 100644
--- a/src/main/java/de/thm/arsnova/cache/ICacheBuster.java
+++ b/src/main/java/de/thm/arsnova/cache/ICacheBuster.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/cache/ScheduledCacheBuster.java b/src/main/java/de/thm/arsnova/cache/ScheduledCacheBuster.java
index 3a093d9784a8efb9ab3b55550a4a47f021a9b09d..a03068b09aa3c7352ed02b3abc19d3310cb7756d 100644
--- a/src/main/java/de/thm/arsnova/cache/ScheduledCacheBuster.java
+++ b/src/main/java/de/thm/arsnova/cache/ScheduledCacheBuster.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/config/ExtraConfig.java b/src/main/java/de/thm/arsnova/config/ExtraConfig.java
index b0e0cdb21e2a23d2bcdeb58efd857c3496a7eea2..0e06eaff1bd2167b66257afe80826038638a1db6 100644
--- a/src/main/java/de/thm/arsnova/config/ExtraConfig.java
+++ b/src/main/java/de/thm/arsnova/config/ExtraConfig.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/config/SecurityConfig.java b/src/main/java/de/thm/arsnova/config/SecurityConfig.java
index f6a4c86927a31641504c92a07f51bd787ad25853..9031c89fe18d87a4aba4b6c953368e2d39b97abf 100644
--- a/src/main/java/de/thm/arsnova/config/SecurityConfig.java
+++ b/src/main/java/de/thm/arsnova/config/SecurityConfig.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/AbstractController.java b/src/main/java/de/thm/arsnova/controller/AbstractController.java
index 75edd8a3c5dac7f95e5e0e133d2c4cda1082ab3b..dc15897544024acab0b9708cc80a65d3b0043dfe 100644
--- a/src/main/java/de/thm/arsnova/controller/AbstractController.java
+++ b/src/main/java/de/thm/arsnova/controller/AbstractController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/AudienceQuestionController.java b/src/main/java/de/thm/arsnova/controller/AudienceQuestionController.java
index 2de2dc3638733d9ded5968821bbc7ea6a3233510..e7cc957dc50f670e3e5cbe4c95526d741b813a82 100644
--- a/src/main/java/de/thm/arsnova/controller/AudienceQuestionController.java
+++ b/src/main/java/de/thm/arsnova/controller/AudienceQuestionController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/ConfigurationController.java b/src/main/java/de/thm/arsnova/controller/ConfigurationController.java
index 2a00e65b726c469a1f4da10c9a2d16300cde240a..bd310bd4b9310be95c2d3f0154c056a1d6715bdb 100644
--- a/src/main/java/de/thm/arsnova/controller/ConfigurationController.java
+++ b/src/main/java/de/thm/arsnova/controller/ConfigurationController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/ControllerExceptionHandler.java b/src/main/java/de/thm/arsnova/controller/ControllerExceptionHandler.java
index 9e91b10a19e4efa4be548001422831f4a09e58f9..bff2d2cc815722eb9cd35e0aea5a60886378529d 100644
--- a/src/main/java/de/thm/arsnova/controller/ControllerExceptionHandler.java
+++ b/src/main/java/de/thm/arsnova/controller/ControllerExceptionHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/CourseController.java b/src/main/java/de/thm/arsnova/controller/CourseController.java
index e8919bc4328b9b8f96daba68863b5770b5eac614..a2de87480ddb05f706563d067e666b55af61c1e6 100644
--- a/src/main/java/de/thm/arsnova/controller/CourseController.java
+++ b/src/main/java/de/thm/arsnova/controller/CourseController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/FeedbackController.java b/src/main/java/de/thm/arsnova/controller/FeedbackController.java
index 2f3e3b16c7b509ee4336f6dda7805ef240245436..13ac754cdcec716beb25e70d7cafe12b815771dc 100644
--- a/src/main/java/de/thm/arsnova/controller/FeedbackController.java
+++ b/src/main/java/de/thm/arsnova/controller/FeedbackController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/LecturerQuestionController.java b/src/main/java/de/thm/arsnova/controller/LecturerQuestionController.java
index 85ee7c9c57380a1bd5dd757c4d97c5c440c527fd..02da7780320d9e5eacb194c534ef5e3ed7b3f97c 100644
--- a/src/main/java/de/thm/arsnova/controller/LecturerQuestionController.java
+++ b/src/main/java/de/thm/arsnova/controller/LecturerQuestionController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/LegacyController.java b/src/main/java/de/thm/arsnova/controller/LegacyController.java
index c9f809c63b73415f788860754cec0716d9c2be90..f76b70ef58c96db66b33b603520a6311f81606b7 100644
--- a/src/main/java/de/thm/arsnova/controller/LegacyController.java
+++ b/src/main/java/de/thm/arsnova/controller/LegacyController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/LoginController.java b/src/main/java/de/thm/arsnova/controller/LoginController.java
index 119e7594e516d997bf2f1f250717d6605337fac3..62ae0233cf4a2195571d2e00be6605a7a17c779a 100644
--- a/src/main/java/de/thm/arsnova/controller/LoginController.java
+++ b/src/main/java/de/thm/arsnova/controller/LoginController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/MotdController.java b/src/main/java/de/thm/arsnova/controller/MotdController.java
index 9f1e5155476635107bb6a1cd114feeb03e8bac3a..ef4ccf5f2712cc611a7a4db2900d618baa24d59d 100644
--- a/src/main/java/de/thm/arsnova/controller/MotdController.java
+++ b/src/main/java/de/thm/arsnova/controller/MotdController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/PaginationController.java b/src/main/java/de/thm/arsnova/controller/PaginationController.java
index a75db3c0302baa84a78aa8393d0c890020ae2e57..4c0890c5f35172406041468199abfec7cd36381a 100644
--- a/src/main/java/de/thm/arsnova/controller/PaginationController.java
+++ b/src/main/java/de/thm/arsnova/controller/PaginationController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/SessionController.java b/src/main/java/de/thm/arsnova/controller/SessionController.java
index 1c1c6599bd3873f1a4519561d905a69faac235f3..35d7f6b7b28e40db82a1b7389fc5ceb48740b842 100644
--- a/src/main/java/de/thm/arsnova/controller/SessionController.java
+++ b/src/main/java/de/thm/arsnova/controller/SessionController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/SocketController.java b/src/main/java/de/thm/arsnova/controller/SocketController.java
index 685d1ff7dccd6432aff1348e63c924ee76ef5576..17d63c70e77818bc770a4a9924d4e00c1e408c21 100644
--- a/src/main/java/de/thm/arsnova/controller/SocketController.java
+++ b/src/main/java/de/thm/arsnova/controller/SocketController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/StatisticsController.java b/src/main/java/de/thm/arsnova/controller/StatisticsController.java
index a82e575357d426d07aa41c7509d207a4db02d212..44b114ed90450eaebbbda626cf65def8af2e5078 100644
--- a/src/main/java/de/thm/arsnova/controller/StatisticsController.java
+++ b/src/main/java/de/thm/arsnova/controller/StatisticsController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/UserController.java b/src/main/java/de/thm/arsnova/controller/UserController.java
index df9237599b782733210c06f11fb39edb4c9ec10c..907ff009b0917bc020af8026e95181c106fcfd48 100644
--- a/src/main/java/de/thm/arsnova/controller/UserController.java
+++ b/src/main/java/de/thm/arsnova/controller/UserController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/controller/WelcomeController.java b/src/main/java/de/thm/arsnova/controller/WelcomeController.java
index 1db64ed41a3754c4f9122218078f930d25a1a53b..40070b7c7b19800bc0700b03d49d8e57393cdef6 100644
--- a/src/main/java/de/thm/arsnova/controller/WelcomeController.java
+++ b/src/main/java/de/thm/arsnova/controller/WelcomeController.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/dao/CouchDBDao.java b/src/main/java/de/thm/arsnova/dao/CouchDBDao.java
index 7df45a7f19e7fdbc14708c9344e4430d324e66ed..92a4829b605ba04c3ffdb0a99c2faef53955f7cc 100644
--- a/src/main/java/de/thm/arsnova/dao/CouchDBDao.java
+++ b/src/main/java/de/thm/arsnova/dao/CouchDBDao.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/dao/IDatabaseDao.java b/src/main/java/de/thm/arsnova/dao/IDatabaseDao.java
index fad83e082e55b89104dfb66108ba541ac54fb161..300bf113de5fe64f398112ab5e62365aee92384d 100644
--- a/src/main/java/de/thm/arsnova/dao/IDatabaseDao.java
+++ b/src/main/java/de/thm/arsnova/dao/IDatabaseDao.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/dao/NovaView.java b/src/main/java/de/thm/arsnova/dao/NovaView.java
index 0f8201a0cf0a71241b4db6bacd3e0f8b05249931..6499052070d235ca851d2ec290fe27903791b616 100644
--- a/src/main/java/de/thm/arsnova/dao/NovaView.java
+++ b/src/main/java/de/thm/arsnova/dao/NovaView.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/CourseScore.java b/src/main/java/de/thm/arsnova/domain/CourseScore.java
index 40a3cf091767162acab5f1ccce971564b8fe3291..f8b675e71a4ad666b5c4abb328b1d391a70ce111 100644
--- a/src/main/java/de/thm/arsnova/domain/CourseScore.java
+++ b/src/main/java/de/thm/arsnova/domain/CourseScore.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/ILearningProgressFactory.java b/src/main/java/de/thm/arsnova/domain/ILearningProgressFactory.java
index 072682946fc1b6c489c79b38edbf9cfc4155303f..d87c5ca26c816fa09b46a74e2c45b5b6cc6c3cf6 100644
--- a/src/main/java/de/thm/arsnova/domain/ILearningProgressFactory.java
+++ b/src/main/java/de/thm/arsnova/domain/ILearningProgressFactory.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/LearningProgress.java b/src/main/java/de/thm/arsnova/domain/LearningProgress.java
index e3f0f3174f956c0712ac5002faa7349f5416f12d..a34ef143d2fc851dc3e219c58717b01cbba3a0c0 100644
--- a/src/main/java/de/thm/arsnova/domain/LearningProgress.java
+++ b/src/main/java/de/thm/arsnova/domain/LearningProgress.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/LearningProgressFactory.java b/src/main/java/de/thm/arsnova/domain/LearningProgressFactory.java
index 89a750ce1675bf3fe33d75f571413499b4124ef9..f2eea21cb293cc7ce4bf44ed924f0d1bad488ec5 100644
--- a/src/main/java/de/thm/arsnova/domain/LearningProgressFactory.java
+++ b/src/main/java/de/thm/arsnova/domain/LearningProgressFactory.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/LearningProgressListener.java b/src/main/java/de/thm/arsnova/domain/LearningProgressListener.java
index 2a11b6d4cb61ea2d1c5033509ee8abbb2cd16fe5..da2c37daff1dc5821d2eb6f74cfa433420474536 100644
--- a/src/main/java/de/thm/arsnova/domain/LearningProgressListener.java
+++ b/src/main/java/de/thm/arsnova/domain/LearningProgressListener.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/PointBasedLearningProgress.java b/src/main/java/de/thm/arsnova/domain/PointBasedLearningProgress.java
index a904caf6b4599c9720a34a4917691cb2b3212bbd..7868b343e2a0e6ef1b5cc09aa8c023870d15656d 100644
--- a/src/main/java/de/thm/arsnova/domain/PointBasedLearningProgress.java
+++ b/src/main/java/de/thm/arsnova/domain/PointBasedLearningProgress.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java b/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
index dba9b41803ba939c47338945805eebd4a30d6b13..36eddc831694d175a0946fb350154b92bf9f9053 100644
--- a/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
+++ b/src/main/java/de/thm/arsnova/domain/QuestionBasedLearningProgress.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/QuestionScore.java b/src/main/java/de/thm/arsnova/domain/QuestionScore.java
index 32b5b6f52d6d89331a5eee267292a8543c9bfdff..ce7dcd8847b0abf624160811a420b37d8b82cdf3 100644
--- a/src/main/java/de/thm/arsnova/domain/QuestionScore.java
+++ b/src/main/java/de/thm/arsnova/domain/QuestionScore.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/UserScore.java b/src/main/java/de/thm/arsnova/domain/UserScore.java
index dddd611dfa4590df07ecbeeb13ad27eb6633251e..1b5b7448bd7c4aac01e5cc3282a5eaaaac81625a 100644
--- a/src/main/java/de/thm/arsnova/domain/UserScore.java
+++ b/src/main/java/de/thm/arsnova/domain/UserScore.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/domain/VariantLearningProgress.java b/src/main/java/de/thm/arsnova/domain/VariantLearningProgress.java
index 708acb4b79b454803a6d0bb3233e4e9de3ece960..736e55ed3122b890d205bf98f8c25cc9d1da376d 100644
--- a/src/main/java/de/thm/arsnova/domain/VariantLearningProgress.java
+++ b/src/main/java/de/thm/arsnova/domain/VariantLearningProgress.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Answer.java b/src/main/java/de/thm/arsnova/entities/Answer.java
index 283060bb155cd307944bb5b7037f428bfadd2708..f3b5331d43085faee9b5724a03983e7c1e451054 100644
--- a/src/main/java/de/thm/arsnova/entities/Answer.java
+++ b/src/main/java/de/thm/arsnova/entities/Answer.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Authorize.java b/src/main/java/de/thm/arsnova/entities/Authorize.java
index de37e72a5164c3991549d71af68dc843f8b931e0..aef3a6396ad921a3b4b189740afe6d1e52dbe609 100644
--- a/src/main/java/de/thm/arsnova/entities/Authorize.java
+++ b/src/main/java/de/thm/arsnova/entities/Authorize.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/DbUser.java b/src/main/java/de/thm/arsnova/entities/DbUser.java
index 75d9ba712d373b262cd2c36e9553b655c8ac89bc..9d18ed03d241186d8eb76ced326fb48b486cc3d7 100644
--- a/src/main/java/de/thm/arsnova/entities/DbUser.java
+++ b/src/main/java/de/thm/arsnova/entities/DbUser.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Feedback.java b/src/main/java/de/thm/arsnova/entities/Feedback.java
index c50480f094e537aed33f579f4d71f94e1ed83313..8c90008f3f71638969b01179e2b8f348eb70287a 100644
--- a/src/main/java/de/thm/arsnova/entities/Feedback.java
+++ b/src/main/java/de/thm/arsnova/entities/Feedback.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/InterposedQuestion.java b/src/main/java/de/thm/arsnova/entities/InterposedQuestion.java
index 7b206698b9d2ee5b93198696fada21a3c5b25b75..89f42a3a5e79173b1513fac1964cdf3a7d2ee90f 100644
--- a/src/main/java/de/thm/arsnova/entities/InterposedQuestion.java
+++ b/src/main/java/de/thm/arsnova/entities/InterposedQuestion.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/InterposedReadingCount.java b/src/main/java/de/thm/arsnova/entities/InterposedReadingCount.java
index a254cb6c691b3154d2feb071e176a04d027dd0b2..04c7c26705b59722fbf21ce2e06c316a2a7563f8 100644
--- a/src/main/java/de/thm/arsnova/entities/InterposedReadingCount.java
+++ b/src/main/java/de/thm/arsnova/entities/InterposedReadingCount.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/LearningProgressOptions.java b/src/main/java/de/thm/arsnova/entities/LearningProgressOptions.java
index 4d682884a1b50bb7e7f60077bc92c710a0f854da..678e0d889b946d2eb8c5f5c27abe710445f785e9 100644
--- a/src/main/java/de/thm/arsnova/entities/LearningProgressOptions.java
+++ b/src/main/java/de/thm/arsnova/entities/LearningProgressOptions.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/LogEntry.java b/src/main/java/de/thm/arsnova/entities/LogEntry.java
index d4e20cc1706675d4d8c9aeebfa3a88d3fc2918d3..61418acb22d8f9188fc0e74b2f5b34f6f8c436dd 100644
--- a/src/main/java/de/thm/arsnova/entities/LogEntry.java
+++ b/src/main/java/de/thm/arsnova/entities/LogEntry.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/LoggedIn.java b/src/main/java/de/thm/arsnova/entities/LoggedIn.java
index 69f0eebf187547c57c016cb4fc49bc08042db0fd..ad24c1ff96003325d2c3755f3c9ca3985dff75e3 100644
--- a/src/main/java/de/thm/arsnova/entities/LoggedIn.java
+++ b/src/main/java/de/thm/arsnova/entities/LoggedIn.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Motd.java b/src/main/java/de/thm/arsnova/entities/Motd.java
index 35864703d31170f44226a2ffbeba76f8d8607685..539e158c59689bf5d61eb7b69f39d510ab2e8752 100644
--- a/src/main/java/de/thm/arsnova/entities/Motd.java
+++ b/src/main/java/de/thm/arsnova/entities/Motd.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/MotdList.java b/src/main/java/de/thm/arsnova/entities/MotdList.java
index 307fb6696398d1b95e94b581f9a389e48960fae8..4ef96ca234d3c9469e6c15ada755066b3bb0d378 100644
--- a/src/main/java/de/thm/arsnova/entities/MotdList.java
+++ b/src/main/java/de/thm/arsnova/entities/MotdList.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/PossibleAnswer.java b/src/main/java/de/thm/arsnova/entities/PossibleAnswer.java
index 0b7fa7983f2dfadf0a92c1ea9e32002e5b87a995..981af8e13f860b3ecb30c5262feac009be980176 100644
--- a/src/main/java/de/thm/arsnova/entities/PossibleAnswer.java
+++ b/src/main/java/de/thm/arsnova/entities/PossibleAnswer.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Question.java b/src/main/java/de/thm/arsnova/entities/Question.java
index a99670287ba7b6ce8c87f1bdbc730db9c2969e0e..56c2a8ac3b979bb5c972e0f1004cf8d852cad4d7 100644
--- a/src/main/java/de/thm/arsnova/entities/Question.java
+++ b/src/main/java/de/thm/arsnova/entities/Question.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/ServiceDescription.java b/src/main/java/de/thm/arsnova/entities/ServiceDescription.java
index 421cc20471345e4483acbbec26dc4dbd8140657a..f2801f62afa73140da1a58c672d6de280643083b 100644
--- a/src/main/java/de/thm/arsnova/entities/ServiceDescription.java
+++ b/src/main/java/de/thm/arsnova/entities/ServiceDescription.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Session.java b/src/main/java/de/thm/arsnova/entities/Session.java
index 28ad60ecc01caaae4b8230bdd6fd1085d10f5628..ac2d658a4a647c73651ce9d42406b37cfee94f54 100644
--- a/src/main/java/de/thm/arsnova/entities/Session.java
+++ b/src/main/java/de/thm/arsnova/entities/Session.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/SessionFeature.java b/src/main/java/de/thm/arsnova/entities/SessionFeature.java
index fd3ac40f56f552fff63c4fe2ac34bfb5ef02fb26..0d4ae92d38bf156c9e1367e28350b934ff34d690 100644
--- a/src/main/java/de/thm/arsnova/entities/SessionFeature.java
+++ b/src/main/java/de/thm/arsnova/entities/SessionFeature.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/SessionInfo.java b/src/main/java/de/thm/arsnova/entities/SessionInfo.java
index e34227862f8f815e53779cd5cd7ef8fd3223ab9c..dccac0c119cdc2d47db74a4eafa34cc18f5cb496 100644
--- a/src/main/java/de/thm/arsnova/entities/SessionInfo.java
+++ b/src/main/java/de/thm/arsnova/entities/SessionInfo.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/Statistics.java b/src/main/java/de/thm/arsnova/entities/Statistics.java
index 49f9179730fea33687d094bc932a939409f442d0..13755db7f3a7591f300d7ac51b95d8ec8246daed 100644
--- a/src/main/java/de/thm/arsnova/entities/Statistics.java
+++ b/src/main/java/de/thm/arsnova/entities/Statistics.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/User.java b/src/main/java/de/thm/arsnova/entities/User.java
index 21954341a635bc94b63738f88e89507173dae22b..ebfd16b6757e465432d4d1a72508b11161e1e997 100644
--- a/src/main/java/de/thm/arsnova/entities/User.java
+++ b/src/main/java/de/thm/arsnova/entities/User.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/VisitedSession.java b/src/main/java/de/thm/arsnova/entities/VisitedSession.java
index 166496fc043f76de916dcb52bdc8f80aaf85c00c..8723aa021e0aaa33b00bbb3edc2fa31ee551c20f 100644
--- a/src/main/java/de/thm/arsnova/entities/VisitedSession.java
+++ b/src/main/java/de/thm/arsnova/entities/VisitedSession.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/Answer.java b/src/main/java/de/thm/arsnova/entities/transport/Answer.java
index 4eaa7ba714a836492edb4a3e6777af3663e11917..91351bb65b84f839258df7b7ace2c0baf14cdc60 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/Answer.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/Answer.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/AnswerQueueElement.java b/src/main/java/de/thm/arsnova/entities/transport/AnswerQueueElement.java
index 92b8b4950ba24b3407beca5e3a8e2648f7d25300..5e509923a0762255f73af9558cabbbd78889f585 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/AnswerQueueElement.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/AnswerQueueElement.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/ImportExportSession.java b/src/main/java/de/thm/arsnova/entities/transport/ImportExportSession.java
index 7cbfce0522bc2ff5e3d2418673f80fb808ef69b2..68950bdef75cf84040e8182f81551b259ea59710 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/ImportExportSession.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/ImportExportSession.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/InterposedQuestion.java b/src/main/java/de/thm/arsnova/entities/transport/InterposedQuestion.java
index 86d3115267712ba2ea96c93e73b5c6fb2a540c30..19dfba46db7406848917ebfbda5666dfbd06b15e 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/InterposedQuestion.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/InterposedQuestion.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/LearningProgressOptions.java b/src/main/java/de/thm/arsnova/entities/transport/LearningProgressOptions.java
index 2bdc44886d518d97bed200f54246369148e1e257..5a082b3592bcdbe7edaebf24a74e02844ef17b14 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/LearningProgressOptions.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/LearningProgressOptions.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/entities/transport/LearningProgressValues.java b/src/main/java/de/thm/arsnova/entities/transport/LearningProgressValues.java
index 041ee4d54c7bcf6e214eeb7da4d5cbb304909f38..33a581701244c4795bbac6767ec119d925104e06 100644
--- a/src/main/java/de/thm/arsnova/entities/transport/LearningProgressValues.java
+++ b/src/main/java/de/thm/arsnova/entities/transport/LearningProgressValues.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/ChangeLearningProgressEvent.java b/src/main/java/de/thm/arsnova/events/ChangeLearningProgressEvent.java
index 60c104ab2cf1cab6f63e57e61aaec791ea3445cd..e39f41c40cdd4d6bb0188d58736c98612b6df48f 100644
--- a/src/main/java/de/thm/arsnova/events/ChangeLearningProgressEvent.java
+++ b/src/main/java/de/thm/arsnova/events/ChangeLearningProgressEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteAllLectureAnswersEvent.java b/src/main/java/de/thm/arsnova/events/DeleteAllLectureAnswersEvent.java
index 14848eec737fb72b827e00a2845c8205877469bf..af34a34247541b03aacecc6f6185360fc86ef192 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteAllLectureAnswersEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteAllLectureAnswersEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteAllPreparationAnswersEvent.java b/src/main/java/de/thm/arsnova/events/DeleteAllPreparationAnswersEvent.java
index 1321bc33f9eca71b93e7506b43582e26a7afdcd2..43f04bc0f0e8f6044a23ca92a5a03024ae618d80 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteAllPreparationAnswersEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteAllPreparationAnswersEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsAnswersEvent.java b/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsAnswersEvent.java
index 7c772bc4676d8d8f990ce5839ef946bf1bebced2..675c5bf428ff401ab1b310c1a462564f95c1d844 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsAnswersEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsAnswersEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsEvent.java b/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsEvent.java
index 0ee77d87ca63cb691c06b723c0e83440de3d6ce5..e188d111c7e00d25fb5408c0a31d25197157d72f 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteAllQuestionsEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteAnswerEvent.java b/src/main/java/de/thm/arsnova/events/DeleteAnswerEvent.java
index 8d400e92823539cab79c6ca09ed484e772604b02..c7d0295530e9d15b36f8ce22d7599987a759ac2c 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteAnswerEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteAnswerEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteFeedbackForSessionsEvent.java b/src/main/java/de/thm/arsnova/events/DeleteFeedbackForSessionsEvent.java
index a416b205d9eb714f2d55d183a4930a9a7c1e1332..51ea214bcad6b775824ba7013e83633b68e1a90b 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteFeedbackForSessionsEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteFeedbackForSessionsEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteInterposedQuestionEvent.java b/src/main/java/de/thm/arsnova/events/DeleteInterposedQuestionEvent.java
index fb0b6ce0283f88f1242e3445a195fc026c4364c4..398abcc52ce05eea523c6095e87f60db41bef95f 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteInterposedQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteInterposedQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteQuestionEvent.java b/src/main/java/de/thm/arsnova/events/DeleteQuestionEvent.java
index 2f3cfd71b2518377694c7c3e160a3ee4dcc373cf..2f0ee4550b5b4ed17a804f457bed932eb1d71231 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/DeleteSessionEvent.java b/src/main/java/de/thm/arsnova/events/DeleteSessionEvent.java
index 7daf6d22a51e66a6153e487d5622019714e1e19d..d2a1c290f7f6576b53dbc3aef003b0f4538d59e4 100644
--- a/src/main/java/de/thm/arsnova/events/DeleteSessionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/DeleteSessionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/FeatureChangeEvent.java b/src/main/java/de/thm/arsnova/events/FeatureChangeEvent.java
index 40e08462519cc183a18b7ad108327312f3b387a8..ea1fb749562810f01c25d09a63d009cb3c83878c 100644
--- a/src/main/java/de/thm/arsnova/events/FeatureChangeEvent.java
+++ b/src/main/java/de/thm/arsnova/events/FeatureChangeEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/FlipFlashcardsEvent.java b/src/main/java/de/thm/arsnova/events/FlipFlashcardsEvent.java
index 78d7688fbf0fe22648fc3bb83fe00b89ee141be6..57cd195febe6b91a7a24fdd7eca2b85795846e70 100644
--- a/src/main/java/de/thm/arsnova/events/FlipFlashcardsEvent.java
+++ b/src/main/java/de/thm/arsnova/events/FlipFlashcardsEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/LockFeedbackEvent.java b/src/main/java/de/thm/arsnova/events/LockFeedbackEvent.java
index c6330eb6e78b18e4d17f34c0a9df9a2b8dc6c4d4..0e76e4614e93c0577b1d496b95fd26ecc55a7881 100644
--- a/src/main/java/de/thm/arsnova/events/LockFeedbackEvent.java
+++ b/src/main/java/de/thm/arsnova/events/LockFeedbackEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/LockQuestionEvent.java b/src/main/java/de/thm/arsnova/events/LockQuestionEvent.java
index 389b3ea97b08bb76af634a26036283c2344c46d1..d706eaf1f592f1f6b733e514101b9a2b1f72c8be 100644
--- a/src/main/java/de/thm/arsnova/events/LockQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/LockQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/LockQuestionsEvent.java b/src/main/java/de/thm/arsnova/events/LockQuestionsEvent.java
index 9ee93fa3b232f2f4ec517dc5ffa304256553f2a2..3797825f98482a47c12501aba995f40d7d864273 100644
--- a/src/main/java/de/thm/arsnova/events/LockQuestionsEvent.java
+++ b/src/main/java/de/thm/arsnova/events/LockQuestionsEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/LockVoteEvent.java b/src/main/java/de/thm/arsnova/events/LockVoteEvent.java
index b33922f4f25bdc75a5df1a520fffce1e14c0b548..ab1e6809fbaebd914feb70455ca5598c4230306f 100644
--- a/src/main/java/de/thm/arsnova/events/LockVoteEvent.java
+++ b/src/main/java/de/thm/arsnova/events/LockVoteEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/LockVotesEvent.java b/src/main/java/de/thm/arsnova/events/LockVotesEvent.java
index fb5acd7c16e404db66a3a716ba48f52f7461253e..277cbaa886081cd0e33f7485d5cbc905d22ddbb6 100644
--- a/src/main/java/de/thm/arsnova/events/LockVotesEvent.java
+++ b/src/main/java/de/thm/arsnova/events/LockVotesEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NewAnswerEvent.java b/src/main/java/de/thm/arsnova/events/NewAnswerEvent.java
index c2fd68a5237b2e0e73fc1ec9535405989d4ca579..06d3cf564333aff79b8a645eb526b22c6deb1b3a 100644
--- a/src/main/java/de/thm/arsnova/events/NewAnswerEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NewAnswerEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NewFeedbackEvent.java b/src/main/java/de/thm/arsnova/events/NewFeedbackEvent.java
index f4a88dbf8c8474a56386850738ed112ca3f6a494..8a6e56f0f86393a6a7b7e1326ed5b1edb04585dc 100644
--- a/src/main/java/de/thm/arsnova/events/NewFeedbackEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NewFeedbackEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NewInterposedQuestionEvent.java b/src/main/java/de/thm/arsnova/events/NewInterposedQuestionEvent.java
index 3983c70177bd98d08a3a44a66af0535709e6530e..5b3c5a9f5d8698a01075e96449ef73422d8b2880 100644
--- a/src/main/java/de/thm/arsnova/events/NewInterposedQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NewInterposedQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NewQuestionEvent.java b/src/main/java/de/thm/arsnova/events/NewQuestionEvent.java
index 6ac4be12e84ad0c21b835f08f434aa72c9dfa11d..f6e1f4873ac0dddead3815bf7320ac342337b25b 100644
--- a/src/main/java/de/thm/arsnova/events/NewQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NewQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NewSessionEvent.java b/src/main/java/de/thm/arsnova/events/NewSessionEvent.java
index ca8115e501c6df0f639f5fb11e628a2443a49311..4969691861a18f497aab9ca6ebc9388f7fd45477 100644
--- a/src/main/java/de/thm/arsnova/events/NewSessionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NewSessionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NovaEvent.java b/src/main/java/de/thm/arsnova/events/NovaEvent.java
index 818113b284d112345af39eecefb27bb0ec241562..d99c04add162c652a0213822d38618a18c5ee3d9 100644
--- a/src/main/java/de/thm/arsnova/events/NovaEvent.java
+++ b/src/main/java/de/thm/arsnova/events/NovaEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/NovaEventVisitor.java b/src/main/java/de/thm/arsnova/events/NovaEventVisitor.java
index 0152851ce50df48bb3063bc115449059e911d6c1..3e2fdaf322eb2ef0b3412dc7abef0ef15d8addab 100644
--- a/src/main/java/de/thm/arsnova/events/NovaEventVisitor.java
+++ b/src/main/java/de/thm/arsnova/events/NovaEventVisitor.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/PiRoundCancelEvent.java b/src/main/java/de/thm/arsnova/events/PiRoundCancelEvent.java
index 86ff69ae311e784a077d40aa8eda3ba44627f341..c553eada4a8fa3103cfe20f6332f476f54b8e82f 100644
--- a/src/main/java/de/thm/arsnova/events/PiRoundCancelEvent.java
+++ b/src/main/java/de/thm/arsnova/events/PiRoundCancelEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/PiRoundDelayedStartEvent.java b/src/main/java/de/thm/arsnova/events/PiRoundDelayedStartEvent.java
index 6fdc587e38791ae1c56c54e2fa329841dd93b9f2..02a5f8ecbee45dbc76ca470f8b30c2b5cad3a6fc 100644
--- a/src/main/java/de/thm/arsnova/events/PiRoundDelayedStartEvent.java
+++ b/src/main/java/de/thm/arsnova/events/PiRoundDelayedStartEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/PiRoundEndEvent.java b/src/main/java/de/thm/arsnova/events/PiRoundEndEvent.java
index b87d12590bdd7e3667d7998367b86cbb4514b07d..559f35c9f85f735cda6e845b95bfbd301632bf29 100644
--- a/src/main/java/de/thm/arsnova/events/PiRoundEndEvent.java
+++ b/src/main/java/de/thm/arsnova/events/PiRoundEndEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/PiRoundResetEvent.java b/src/main/java/de/thm/arsnova/events/PiRoundResetEvent.java
index 429aeb274c1b26fecbc1f779734316a9d2835ca1..3063807ff05616e0d6008b842720d73ac9fdb207 100644
--- a/src/main/java/de/thm/arsnova/events/PiRoundResetEvent.java
+++ b/src/main/java/de/thm/arsnova/events/PiRoundResetEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/SessionEvent.java b/src/main/java/de/thm/arsnova/events/SessionEvent.java
index 00ea28c423c6ae48e12f19a58c486a4df970d6e9..2fc87c61c98dbc816ff5f87bbff91e3a166b13ef 100644
--- a/src/main/java/de/thm/arsnova/events/SessionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/SessionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/StatusSessionEvent.java b/src/main/java/de/thm/arsnova/events/StatusSessionEvent.java
index 32c575dad0272c8c6da408f7b7e55737b6aa414f..8b7f9264b200c214d0c9198ed4bdbeb506ac8e7d 100644
--- a/src/main/java/de/thm/arsnova/events/StatusSessionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/StatusSessionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/UnlockQuestionEvent.java b/src/main/java/de/thm/arsnova/events/UnlockQuestionEvent.java
index d04c709e8af2b89761f7bcf4d2de508558096f82..5d246d8ba5c010553150ac988f3af631dc204788 100644
--- a/src/main/java/de/thm/arsnova/events/UnlockQuestionEvent.java
+++ b/src/main/java/de/thm/arsnova/events/UnlockQuestionEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/UnlockQuestionsEvent.java b/src/main/java/de/thm/arsnova/events/UnlockQuestionsEvent.java
index b760b4ce5f4fb73e528432b782f9fbe3687d6cf0..0632892ecd8a73bb290640693582ce66e4ba518c 100644
--- a/src/main/java/de/thm/arsnova/events/UnlockQuestionsEvent.java
+++ b/src/main/java/de/thm/arsnova/events/UnlockQuestionsEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/UnlockVoteEvent.java b/src/main/java/de/thm/arsnova/events/UnlockVoteEvent.java
index 69a1f45717e077339a28267700a43a8e6123703a..3371743aab7f4de05bb730a8718b6d9ddce4f0eb 100644
--- a/src/main/java/de/thm/arsnova/events/UnlockVoteEvent.java
+++ b/src/main/java/de/thm/arsnova/events/UnlockVoteEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/events/UnlockVotesEvent.java b/src/main/java/de/thm/arsnova/events/UnlockVotesEvent.java
index c489aefcf5d8b22ab91e8d649985201e1f85a4cf..a30d41d970f91fbcb40b6e10450ee9b0fe008aae 100644
--- a/src/main/java/de/thm/arsnova/events/UnlockVotesEvent.java
+++ b/src/main/java/de/thm/arsnova/events/UnlockVotesEvent.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/security/ApplicationPermissionEvaluator.java b/src/main/java/de/thm/arsnova/security/ApplicationPermissionEvaluator.java
index df5f6c9f83070c7e1648fca4c0dd125489683351..f8bb2a828aff87fa25047cb3bd145bf3bc868f2f 100644
--- a/src/main/java/de/thm/arsnova/security/ApplicationPermissionEvaluator.java
+++ b/src/main/java/de/thm/arsnova/security/ApplicationPermissionEvaluator.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/security/CustomLdapUserDetailsMapper.java b/src/main/java/de/thm/arsnova/security/CustomLdapUserDetailsMapper.java
index 34e4af94487c6e368be994ea37d2407d606c38c9..c8086a0e55a2c831cc889b88cf4aa448b55bad6e 100644
--- a/src/main/java/de/thm/arsnova/security/CustomLdapUserDetailsMapper.java
+++ b/src/main/java/de/thm/arsnova/security/CustomLdapUserDetailsMapper.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/security/DbUserDetailsService.java b/src/main/java/de/thm/arsnova/security/DbUserDetailsService.java
index cb1000e97b2668b3071b7ded3a8b989974452481..ad9463b3d09abf500fee852da3f7017dc691fa45 100644
--- a/src/main/java/de/thm/arsnova/security/DbUserDetailsService.java
+++ b/src/main/java/de/thm/arsnova/security/DbUserDetailsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/FeedbackService.java b/src/main/java/de/thm/arsnova/services/FeedbackService.java
index 1c49f3d5f77e956eead8831775f872ff69d3452b..4882d11397f80c4b5eeebbe414761fea7e77d36e 100644
--- a/src/main/java/de/thm/arsnova/services/FeedbackService.java
+++ b/src/main/java/de/thm/arsnova/services/FeedbackService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/IFeedbackService.java b/src/main/java/de/thm/arsnova/services/IFeedbackService.java
index dc0210164abc326739e2a300fcc636f4ff7e710c..5aa7ab6a6c44d38f03a7682332ecd39121d53eb3 100644
--- a/src/main/java/de/thm/arsnova/services/IFeedbackService.java
+++ b/src/main/java/de/thm/arsnova/services/IFeedbackService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/IMotdService.java b/src/main/java/de/thm/arsnova/services/IMotdService.java
index a9488e4134b60f43be582c9a6f521bff83010ff4..9742c87488784ecd5a7fa81355af14d439347b0f 100644
--- a/src/main/java/de/thm/arsnova/services/IMotdService.java
+++ b/src/main/java/de/thm/arsnova/services/IMotdService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/IQuestionService.java b/src/main/java/de/thm/arsnova/services/IQuestionService.java
index f03a88e98776f14d0e3f60db8c175e33ab179801..11d63755a49376b564a22d94f4031218e55240c2 100644
--- a/src/main/java/de/thm/arsnova/services/IQuestionService.java
+++ b/src/main/java/de/thm/arsnova/services/IQuestionService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/ISessionService.java b/src/main/java/de/thm/arsnova/services/ISessionService.java
index c6796f7cebdf90210ac34e4c197242d1eb9ccd7c..e7755801ee4c19b26830cf884ba96371c7355e40 100644
--- a/src/main/java/de/thm/arsnova/services/ISessionService.java
+++ b/src/main/java/de/thm/arsnova/services/ISessionService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/IStatisticsService.java b/src/main/java/de/thm/arsnova/services/IStatisticsService.java
index 86f72807b887166dd54e9f0a680591b9841d87e2..8afad60e4c063d683ca4f9c0d15a43e894a1803a 100644
--- a/src/main/java/de/thm/arsnova/services/IStatisticsService.java
+++ b/src/main/java/de/thm/arsnova/services/IStatisticsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/IUserService.java b/src/main/java/de/thm/arsnova/services/IUserService.java
index 37b4d0b6076aa568cab3f86b420eb8b5aee729b0..fe4b64424896166c2125bdc3c2fcede24cd7cf82 100644
--- a/src/main/java/de/thm/arsnova/services/IUserService.java
+++ b/src/main/java/de/thm/arsnova/services/IUserService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/MotdService.java b/src/main/java/de/thm/arsnova/services/MotdService.java
index ecda866383aadd4023b44847a43ed788ef50ff18..62ad32f4668c9ac78e0dfc0742afaba993156cb4 100644
--- a/src/main/java/de/thm/arsnova/services/MotdService.java
+++ b/src/main/java/de/thm/arsnova/services/MotdService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/QuestionService.java b/src/main/java/de/thm/arsnova/services/QuestionService.java
index aa1e999c4db651d3d0345bb4aaad80e61c5e208d..cd96faf6ed4287007fcc4c2f76519356ec7eaf65 100644
--- a/src/main/java/de/thm/arsnova/services/QuestionService.java
+++ b/src/main/java/de/thm/arsnova/services/QuestionService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/ResponseProviderService.java b/src/main/java/de/thm/arsnova/services/ResponseProviderService.java
index 59d0e15a64f3c1f4d030d3f401547ed9a8bc5ff1..79aaf92b2fb38340d04cbb44aa5e9e7ac3f4fe24 100644
--- a/src/main/java/de/thm/arsnova/services/ResponseProviderService.java
+++ b/src/main/java/de/thm/arsnova/services/ResponseProviderService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/ResponseProviderServiceImpl.java b/src/main/java/de/thm/arsnova/services/ResponseProviderServiceImpl.java
index 32b3362c46c0032fcb9486e67f6f0fba793fe51f..abcbba9eb315d42134c138b62ebc5c7b8af1b699 100644
--- a/src/main/java/de/thm/arsnova/services/ResponseProviderServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/services/ResponseProviderServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/SessionService.java b/src/main/java/de/thm/arsnova/services/SessionService.java
index 78a9ad7b780d4906c68768e3c5d07712dd14e41a..83b06324b3a6469873900e9ac19ee8b49e11bc34 100644
--- a/src/main/java/de/thm/arsnova/services/SessionService.java
+++ b/src/main/java/de/thm/arsnova/services/SessionService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/StatisticsService.java b/src/main/java/de/thm/arsnova/services/StatisticsService.java
index e8e7fff3e2c234b9007811f36490469f46f8cd55..8b150f9fc2106fe1a65a9b28093a0e7e6dda1ce5 100644
--- a/src/main/java/de/thm/arsnova/services/StatisticsService.java
+++ b/src/main/java/de/thm/arsnova/services/StatisticsService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/UserService.java b/src/main/java/de/thm/arsnova/services/UserService.java
index 32a4f0837fd0063d364760fb2c8a5a99ab741b3e..e350f10633e5a8e9a0c748a4e33fb97794b61423 100644
--- a/src/main/java/de/thm/arsnova/services/UserService.java
+++ b/src/main/java/de/thm/arsnova/services/UserService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/UserSessionService.java b/src/main/java/de/thm/arsnova/services/UserSessionService.java
index 10252f1f99798acbe735e60aa9d4e59b23fdeb95..79ab4f84a8c7865a532153748dabd24addfcc91c 100644
--- a/src/main/java/de/thm/arsnova/services/UserSessionService.java
+++ b/src/main/java/de/thm/arsnova/services/UserSessionService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/services/UserSessionServiceImpl.java b/src/main/java/de/thm/arsnova/services/UserSessionServiceImpl.java
index a9300cbe06a359204a22280bf889b8fd79d6d3dd..da33beaadd8c0146a36558500471d9e91eeb2f70 100644
--- a/src/main/java/de/thm/arsnova/services/UserSessionServiceImpl.java
+++ b/src/main/java/de/thm/arsnova/services/UserSessionServiceImpl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/ARSnovaSocket.java b/src/main/java/de/thm/arsnova/socket/ARSnovaSocket.java
index 313e330cd6628d70f771b8ee14b5cd83bce79cbe..36ff4400446f273627623cd3e3be51bc1f86dd5a 100644
--- a/src/main/java/de/thm/arsnova/socket/ARSnovaSocket.java
+++ b/src/main/java/de/thm/arsnova/socket/ARSnovaSocket.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
index 0b91b686e7ffed245f728c7be80c5965990e7fe5..e527c3da9349d60195e2cfd3e7d0d3dbba7c00c3 100644
--- a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
+++ b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketListener.java b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketListener.java
index 6c740888f5a7d433f9fd151acebb131702f568ba..fd9ab4651ad8f25fd613fe0c5aa620552cdd63c6 100644
--- a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketListener.java
+++ b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketListener.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/message/Feedback.java b/src/main/java/de/thm/arsnova/socket/message/Feedback.java
index 211e10d6a6a39a4b3ac036b1db46d9c47a0da639..a612099aab96dba56ec1a36501417fc14abe3620 100644
--- a/src/main/java/de/thm/arsnova/socket/message/Feedback.java
+++ b/src/main/java/de/thm/arsnova/socket/message/Feedback.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/message/Question.java b/src/main/java/de/thm/arsnova/socket/message/Question.java
index c8660e3dbc80ef7e479d86832f9c053d1e688287..6edd9e0e8eb2b725de1c31cf6736682f5bf6b35c 100644
--- a/src/main/java/de/thm/arsnova/socket/message/Question.java
+++ b/src/main/java/de/thm/arsnova/socket/message/Question.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/socket/message/Session.java b/src/main/java/de/thm/arsnova/socket/message/Session.java
index 88f7c53d27e342ff6f0e804cd2943e03d4d97ec1..2d680476bb3c5cdecffc3831ff7a80feb8fd3d03 100644
--- a/src/main/java/de/thm/arsnova/socket/message/Session.java
+++ b/src/main/java/de/thm/arsnova/socket/message/Session.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/CacheControl.java b/src/main/java/de/thm/arsnova/web/CacheControl.java
index f2215ef2b794fd4ba108d97a33cc151af9ae19e2..dfbfc6ef97af563de3a945065fd213d72a3f3151 100644
--- a/src/main/java/de/thm/arsnova/web/CacheControl.java
+++ b/src/main/java/de/thm/arsnova/web/CacheControl.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/CacheControlInterceptorHandler.java b/src/main/java/de/thm/arsnova/web/CacheControlInterceptorHandler.java
index 6c7605f30feadb4e46511cdde2ed6bb6bd0c3d1a..e6f5665259627581111db9c26351053db7bc4cb2 100644
--- a/src/main/java/de/thm/arsnova/web/CacheControlInterceptorHandler.java
+++ b/src/main/java/de/thm/arsnova/web/CacheControlInterceptorHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/CorsFilter.java b/src/main/java/de/thm/arsnova/web/CorsFilter.java
index 9742993d1951472522d710f4335f53b1747d958a..1390fb45561c986565b822b463f6268c7c90896f 100644
--- a/src/main/java/de/thm/arsnova/web/CorsFilter.java
+++ b/src/main/java/de/thm/arsnova/web/CorsFilter.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/DeprecatedApi.java b/src/main/java/de/thm/arsnova/web/DeprecatedApi.java
index 60b52da6970a83ded5a5c904d009af509de2894a..27d5ffd3d15ce26cc6da764698f9589266c1db33 100644
--- a/src/main/java/de/thm/arsnova/web/DeprecatedApi.java
+++ b/src/main/java/de/thm/arsnova/web/DeprecatedApi.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/DeprecatedApiInterceptorHandler.java b/src/main/java/de/thm/arsnova/web/DeprecatedApiInterceptorHandler.java
index 658465524e1ccfbff035ae1f7e5ba8988e1ad731..8446af40f62ac795d505b35eb1bde915b7a31ee9 100644
--- a/src/main/java/de/thm/arsnova/web/DeprecatedApiInterceptorHandler.java
+++ b/src/main/java/de/thm/arsnova/web/DeprecatedApiInterceptorHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/Pagination.java b/src/main/java/de/thm/arsnova/web/Pagination.java
index 713a10c78924dde5e26ff38a470a106fed16077d..5266898df932a18ef95e34e699297a966646b98f 100644
--- a/src/main/java/de/thm/arsnova/web/Pagination.java
+++ b/src/main/java/de/thm/arsnova/web/Pagination.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/main/java/de/thm/arsnova/web/ResponseInterceptorHandler.java b/src/main/java/de/thm/arsnova/web/ResponseInterceptorHandler.java
index 607a0cfc28143958ee8053c995fc0f2369c3be0b..3edfc47be5208171e9b10228f57c25a2fb014990 100644
--- a/src/main/java/de/thm/arsnova/web/ResponseInterceptorHandler.java
+++ b/src/main/java/de/thm/arsnova/web/ResponseInterceptorHandler.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/ImageUtilsTest.java b/src/test/java/de/thm/arsnova/ImageUtilsTest.java
index 4bc46639521c574665f8afc88fee8aa698c97bc2..f12f8641d8ab3942eda09253e8b7e9787b9bedff 100644
--- a/src/test/java/de/thm/arsnova/ImageUtilsTest.java
+++ b/src/test/java/de/thm/arsnova/ImageUtilsTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/config/ExtraConfigTest.java b/src/test/java/de/thm/arsnova/config/ExtraConfigTest.java
index b8e6bb5730927fc0e0d080441e4574074771391d..1c39928558680e02867e700da4601d2eb4854c5a 100644
--- a/src/test/java/de/thm/arsnova/config/ExtraConfigTest.java
+++ b/src/test/java/de/thm/arsnova/config/ExtraConfigTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/config/TestSecurityConfig.java b/src/test/java/de/thm/arsnova/config/TestSecurityConfig.java
index ffac0f0f85896bf8e51b4b487e4176d2d22102d5..ff3f6d588b1ee907a26c3a1c32c722fdab6fce7b 100644
--- a/src/test/java/de/thm/arsnova/config/TestSecurityConfig.java
+++ b/src/test/java/de/thm/arsnova/config/TestSecurityConfig.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/AbstractControllerTest.java b/src/test/java/de/thm/arsnova/controller/AbstractControllerTest.java
index 52efdfe3045b481cf58b5459c08deff182cd4fb7..3909402f0bb973a795d53fcdd044618df9ecd25b 100644
--- a/src/test/java/de/thm/arsnova/controller/AbstractControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/AbstractControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/CourseControllerTest.java b/src/test/java/de/thm/arsnova/controller/CourseControllerTest.java
index 57b57c9ea3ab39230d86515de21e01a62c725deb..e150fa914d607329e952accf7d64aae6a1ca624c 100644
--- a/src/test/java/de/thm/arsnova/controller/CourseControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/CourseControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/FeedbackControllerTest.java b/src/test/java/de/thm/arsnova/controller/FeedbackControllerTest.java
index f683ae1b3575c3c32d963318ab0c42859383ce30..ac508309dcfb71f9a2cfa26eb849066481ed75d4 100644
--- a/src/test/java/de/thm/arsnova/controller/FeedbackControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/FeedbackControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/LecturerQuestionControllerTest.java b/src/test/java/de/thm/arsnova/controller/LecturerQuestionControllerTest.java
index ed01dbe64722581fa58217e911c1e1a12d17eceb..a52864db69d6d36e8e93ed81a7081fbef61f263e 100644
--- a/src/test/java/de/thm/arsnova/controller/LecturerQuestionControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/LecturerQuestionControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/LoginControllerTest.java b/src/test/java/de/thm/arsnova/controller/LoginControllerTest.java
index 6e8d3996dea0c3c404d48e9ad2873b5db0009f8c..a89ca8036ca120a5f3591ae6d5afa3a416aa973e 100644
--- a/src/test/java/de/thm/arsnova/controller/LoginControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/LoginControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/SessionControllerTest.java b/src/test/java/de/thm/arsnova/controller/SessionControllerTest.java
index c9ea83a06ada613cff8928092a6a2455031d86c8..e75ced9b073fa7584007ca4fe4cc0acda3be369a 100644
--- a/src/test/java/de/thm/arsnova/controller/SessionControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/SessionControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/controller/StatisticsControllerTest.java b/src/test/java/de/thm/arsnova/controller/StatisticsControllerTest.java
index 44266707c71a3ae532eb6cde590ef7a67e924d05..446ba73e8f9169d36532859ce526dc4f67c94b1f 100644
--- a/src/test/java/de/thm/arsnova/controller/StatisticsControllerTest.java
+++ b/src/test/java/de/thm/arsnova/controller/StatisticsControllerTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/dao/NovaViewTest.java b/src/test/java/de/thm/arsnova/dao/NovaViewTest.java
index 3add83a290064584f43a113fc2ba8bc960960985..4a6335cadacb294cbbb3b98117889f431650c57b 100644
--- a/src/test/java/de/thm/arsnova/dao/NovaViewTest.java
+++ b/src/test/java/de/thm/arsnova/dao/NovaViewTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/dao/StubDatabaseDao.java b/src/test/java/de/thm/arsnova/dao/StubDatabaseDao.java
index b43af7f4aeb857d91dcaf886e8f9305837e036f3..9eb5af8a3889a8697eaf64db8dbd71651dbde44b 100644
--- a/src/test/java/de/thm/arsnova/dao/StubDatabaseDao.java
+++ b/src/test/java/de/thm/arsnova/dao/StubDatabaseDao.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/domain/PointBasedLearningProgressTest.java b/src/test/java/de/thm/arsnova/domain/PointBasedLearningProgressTest.java
index bfad95b362dba4174ad3cd34c26b014dec1fa4b8..9e8e6ba76d7370fc0ad594a6e82c23fd52bb75e7 100644
--- a/src/test/java/de/thm/arsnova/domain/PointBasedLearningProgressTest.java
+++ b/src/test/java/de/thm/arsnova/domain/PointBasedLearningProgressTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/domain/QuestionBasedLearningProgressTest.java b/src/test/java/de/thm/arsnova/domain/QuestionBasedLearningProgressTest.java
index 7e029a6cb9a78144a76644ec018daca03f37b2c7..c4a5a575fa6f6c0d755cf005c724abc1621403d3 100644
--- a/src/test/java/de/thm/arsnova/domain/QuestionBasedLearningProgressTest.java
+++ b/src/test/java/de/thm/arsnova/domain/QuestionBasedLearningProgressTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/entities/FeedbackTest.java b/src/test/java/de/thm/arsnova/entities/FeedbackTest.java
index 2c735b4c3646b8da909b695b832e360462ed029d..e0f3c1b6761b0354cb37254dbb0be8873b70b108 100644
--- a/src/test/java/de/thm/arsnova/entities/FeedbackTest.java
+++ b/src/test/java/de/thm/arsnova/entities/FeedbackTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/entities/QuestionTest.java b/src/test/java/de/thm/arsnova/entities/QuestionTest.java
index 57569e6f220f4b8463bd62eb11e6e9f336069864..a92a140e4ca85bf0ba5099618ab0a42dd2b41b6d 100644
--- a/src/test/java/de/thm/arsnova/entities/QuestionTest.java
+++ b/src/test/java/de/thm/arsnova/entities/QuestionTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/entities/TestUser.java b/src/test/java/de/thm/arsnova/entities/TestUser.java
index e92b37a23c69db959c5e6669e28093a2b1b39df9..cba4b3e07e0abad7816ff4e49a582c56ba5cc012 100644
--- a/src/test/java/de/thm/arsnova/entities/TestUser.java
+++ b/src/test/java/de/thm/arsnova/entities/TestUser.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/services/FeedbackServiceTest.java b/src/test/java/de/thm/arsnova/services/FeedbackServiceTest.java
index ea1163cb36354e5ef7ef12c27cfbe5720149dcfb..e7aace9e4d146c34d9bc5f26a03af01ae4a354f6 100644
--- a/src/test/java/de/thm/arsnova/services/FeedbackServiceTest.java
+++ b/src/test/java/de/thm/arsnova/services/FeedbackServiceTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/services/QuestionServiceTest.java b/src/test/java/de/thm/arsnova/services/QuestionServiceTest.java
index 962c62c3a1d6ac14148cee759b455fb5c3dd461f..f1f9e4f0b7bbb81310af671ad3ea62f0e9fe9c24 100644
--- a/src/test/java/de/thm/arsnova/services/QuestionServiceTest.java
+++ b/src/test/java/de/thm/arsnova/services/QuestionServiceTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/services/SessionServiceTest.java b/src/test/java/de/thm/arsnova/services/SessionServiceTest.java
index fb912f40ce4781064e624293f1621aa7254d1e4f..206fed3b3ddebc6f6472b7c4e0215cde0e945c40 100644
--- a/src/test/java/de/thm/arsnova/services/SessionServiceTest.java
+++ b/src/test/java/de/thm/arsnova/services/SessionServiceTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/services/StubUserService.java b/src/test/java/de/thm/arsnova/services/StubUserService.java
index b072375b65222022d1a67282e5528308d0e62269..e837c1a0488f8487c9affae3e557d703045d20ec 100644
--- a/src/test/java/de/thm/arsnova/services/StubUserService.java
+++ b/src/test/java/de/thm/arsnova/services/StubUserService.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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
diff --git a/src/test/java/de/thm/arsnova/services/UserServiceTest.java b/src/test/java/de/thm/arsnova/services/UserServiceTest.java
index bb1c1a04c1fd6e9834a58a3397b99f9c7bfa127b..269fc652e159ddecac69d4c29e5bd6025018de0d 100644
--- a/src/test/java/de/thm/arsnova/services/UserServiceTest.java
+++ b/src/test/java/de/thm/arsnova/services/UserServiceTest.java
@@ -1,6 +1,6 @@
 /*
  * This file is part of ARSnova Backend.
- * Copyright (C) 2012-2017 The ARSnova Team
+ * 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