change whitespace to tabs, remove unneccessary annotations

src/main/java/de/thm/arsnova/controller/AbstractController.java

@@ -23,12 +23,12 @@ package de.thm.arsnova.controller;
 public class AbstractController {
 	protected static final String X_DEPRECATED_API = "X-Deprecated-API";
 	protected static final String X_FORWARDED = "X-Forwarded";
-    protected static final String HTML_STATUS_200 = "OK";
-    protected static final String HTML_STATUS_201 = "Created";
-    protected static final String HTML_STATUS_204 = "No Content";
-    protected static final String HTML_STATUS_400 = "Bad request";
-    protected static final String HTML_STATUS_403 = "Forbidden";
-    protected static final String HTML_STATUS_404 = "Not Found";
-    protected static final String HTML_STATUS_501 = "Not Implemented";
-    protected static final String HTML_STATUS_503 = "Service Unavailable";
+	protected static final String HTML_STATUS_200 = "OK";
+	protected static final String HTML_STATUS_201 = "Created";
+	protected static final String HTML_STATUS_204 = "No Content";
+	protected static final String HTML_STATUS_400 = "Bad request";
+	protected static final String HTML_STATUS_403 = "Forbidden";
+	protected static final String HTML_STATUS_404 = "Not Found";
+	protected static final String HTML_STATUS_501 = "Not Implemented";
+	protected static final String HTML_STATUS_503 = "Service Unavailable";
 }

src/main/java/de/thm/arsnova/controller/SessionController.java

@@ -224,7 +224,7 @@ public class SessionController extends PaginationController {
 	}
 
 	@ApiOperation(value = "Retrieves all public pool sessions for the current user",
-			nickname = "getMyPublicPoolSessions", response = Session.class, responseContainer = "List")
+			nickname = "getMyPublicPoolSessions")
 	@ApiResponses(value = {
 		@ApiResponse(code = 204, message = HTML_STATUS_204)
 	})