(current) list of speakers: show amount of waiting speakers

client/src/app/slides/agenda/common/common-list-of-speakers-slide.component.html

@@ -1,7 +1,12 @@
 <div *ngIf="data">
     <div class="slidetitle">
         <h1 translate>List of speakers</h1>
-        <h2>{{ getTitle() }}</h2>
+        <h2>
+            {{ getTitle() }}
+            <span *ngIf="getSpeakersCount() > 0">
+                &ndash; {{ getSpeakersCount() }} <span translate>Speakers</span>
+            </span>
+        </h2>
     </div>
 
     <!-- Last speakers -->

client/src/app/slides/agenda/common/common-list-of-speakers-slide.component.ts

@@ -29,4 +29,14 @@ export class CommonListOfSpeakersSlideComponent extends BaseSlideComponent<Commo
             throw new Error('The content object has no agenda base repository!');
         }
     }
+
+    /**
+     * @retuns the amount of waiting speakers
+     */
+    public getSpeakersCount(): number {
+        if (this.data && this.data.data.waiting) {
+            return this.data.data.waiting.length;
+        }
+        return 0;
+    }
 }