Added a scuffed redirect to prior page for impersonation. Fixed some conditions for websocket message checks.

src/app/groups/group-page/group-page.component.ts

@@ -161,7 +161,7 @@ export class GroupPageComponent implements OnDestroy {
     if (!this.group)
       return;
 
-    this._client.first(d => d.d.request.type == 'delete_group' && d.d.request.data.id == this.group!.id)
+    this._client.first(d => d.op == 4 && d.d.request.type == 'delete_group' && d.d.request.data.id == this.group!.id)
       .subscribe(async () => await this._router.navigate(['groups']));
     this._client.deleteGroup(this.group.id);
   }