Add simple routing for answer-statistics

src/app/creator-room/creator-room.component.html

@@ -30,6 +30,9 @@
         <button mat-button color="primary" matTooltip="See answer statistics" routerLink="/creator/room/{{room.id}}/answer-statistics">
           Answer statistics
         </button>
+        <button mat-button color="primary" matTooltip="See answer statistics" routerLink="/creator/room/{{room.id}}/answer-statistics">
+          Answer statistics
+        </button>
         <button *ngIf="!modify" (click)="showEditDialog()" mat-button color="primary">
           Edit room
         </button>