updated overview and divided into "myCourses" and "search courses"

gemeinsamforschen/src/main/java/unipotsdam/gf/util/ResultSetUtil.java

@@ -9,8 +9,8 @@ public class ResultSetUtil {
         String name = vereinfachtesResultSet.getString("name");
         String password = vereinfachtesResultSet.getString("password");
         String email = vereinfachtesResultSet.getString("email");
-        String rocketChatId = vereinfachtesResultSet.getString("rocketChatId");
-        String rocketChatAuthToken = vereinfachtesResultSet.getString("rocketChatAuthToken");
+        String rocketChatId = "";//vereinfachtesResultSet.getString("rocketChatId");
+        String rocketChatAuthToken = "";//vereinfachtesResultSet.getString("rocketChatAuthToken");
         Boolean isStudent = vereinfachtesResultSet.getBoolean("isStudent");
         return new User(name, password, email, rocketChatId, rocketChatAuthToken, isStudent);
     }