Nodes per country list component

frontend/src/app/shared/components/timestamp/timestamp.component.html

@@ -1,4 +1,4 @@
-‎{{ seconds * 1000 | date:'yyyy-MM-dd HH:mm' }}
+‎{{ seconds * 1000 | date: customFormat ?? 'yyyy-MM-dd HH:mm' }}
 <div class="lg-inline">
   <i class="symbol">(<app-time-since [time]="seconds" [fastRender]="true"></app-time-since>)</i>
 </div>