SSA-6467: Display the summary of progress on the minitiles page - part 2

src/app/tiles/progress/progress.component.html

-<table class="table my-3" *ngIf="progress | async as progress">
+<table class="table my-3" *ngIf="progress | async as progress; else loading">
   <thead class="thead-light">
   <tr>
     <th>Epoch</th>
@@ -43,3 +43,6 @@
   </tr>
   </tbody>
 </table>
+<ng-template #loading>
+  <app-loading></app-loading>
+</ng-template>