Remove dummy concept in favor of editor group and editors

app/assets/javascripts/views/editor_group/editor-group-view.pug

@@ -0,0 +1,5 @@
+editor-view(
+  ng-repeat='editor in self.editors'
+  application='self.application'
+  editor='editor'
+  )

app/assets/javascripts/views/editor_group/editor_group_view.ts

@@ -0,0 +1,35 @@
+import { WebApplication } from '@/ui_models/application';
+import { WebDirective } from './../../types';
+import template from './editor-group-view.pug';
+import { Editor } from '@/ui_models/editor';
+
+class EditorGroupViewCtrl {
+
+  private application!: WebApplication
+  public editors: Editor[] = []
+
+  /* @ngInject */
+  constructor() {
+
+  }
+
+  $onInit() {
+    this.application.editorGroup.addChangeObserver(() => {
+      this.editors = this.application.editorGroup.editors;
+    })
+  }
+}
+
+export class EditorGroupView extends WebDirective {
+  constructor() {
+    super();
+    this.template = template;
+    this.controller = EditorGroupViewCtrl;
+    this.replace = true;
+    this.controllerAs = 'self';
+    this.bindToController = true;
+    this.scope = {
+      application: '='
+    };
+  }
+}