Merge branch '406-export-of-questions-does-not-work' into 'master'

Fix comment export

Closes #406

See merge request !388

src/app/components/creator/_dialogs/comment-settings/comment-settings.component.ts

@@ -87,7 +87,7 @@ export class CommentSettingsComponent implements OnInit {
   }
 
   exportCsv(delimiter: string, date: string): void {
-    this.commentService.getComments(this.roomId)
+    this.commentService.getAckComments(this.roomId)
       .subscribe(comments => {
         this.comments = comments;
         const exportComments = JSON.parse(JSON.stringify(this.comments));