Comply API changes & remove unused stuff

src/app/services/websocket.service.ts

@@ -4,6 +4,15 @@ import { webSocket, WebSocketSubject } from 'rxjs/webSocket';
 import { filter, map } from 'rxjs/operators';
 import { WebSocketMessage } from '../message-types/websocket-message';
 
+export enum Scope {
+  ZMQ = 'zmq',
+  WEBSOCKET = 'websocket'
+}
+
+export enum Intent {
+  CONTROL = 'control',
+  EVENT = 'event'
+}
 
 @Injectable()
 export class WebSocketService {
@@ -22,6 +31,7 @@ export class WebSocketService {
   public observeKey<T extends WebSocketMessage>(key: string): Observable<T> {
     return this.ws.pipe(
       filter(message => message.key.startsWith(key)),
+      filter(message => message.intent !== Intent.EVENT),
       map(message => <T> message)
     );
   }