Added empty function

src/main/java/de/thm/arsnova/entities/Session.java

@@ -311,4 +311,13 @@ public class Session implements Serializable {
 		Session other = (Session) obj;
 		return this.keyword.equals(other.keyword);
 	}
+	// Sorting
+	public boolean getSortLectureQuestions(){
+		return false;
+	}
+	// Sorting
+	public boolean getSortPreparationQuestions(){
+		return false;
+	}
+
 }

src/main/java/de/thm/arsnova/services/QuestionService.java

@@ -118,10 +118,12 @@ public class QuestionService implements IQuestionService, ApplicationEventPublis
         // if SortIndex false, list is sorted so new question is appended to sorted list with (highest sequenceNr)++
         if ("lecture".equals(question.getQuestionVariant())) {
             if(session.getSortLectureQuestions()) {
+            	//Take a look at entities/Session.java
                 //question.setSequenceNr();
             }
         } else if ("preparation".equals(question.getQuestionVariant())) {
             if(session.getSortPreparationQuestions()) {
+            	//Take a look at entities/Session.java
                 //question.setSequenceNr();
             }
         }