Fix iframe reload polling

src/app/dashboard/dashboard.component.ts

@@ -103,7 +103,8 @@ export class DashboardComponent implements OnInit, OnDestroy {
   }
 
   reloadIframeHandler(message: WebSocketMessage) {
-    setTimeout(() => this.reloadIframe(), 200);
+    this.iframeReloadPoller.ok.subscribe(() => this.reloadIframe());
+    this.iframeReloadPoller.start();
   }
 
   setLayout(layout: string) {