Added live refresh to admin UI

- Added lastLogin UI
- Added operational time

frontend/src/app/adminui/adminui.component.html

@@ -22,7 +22,7 @@
     <div class="shadow stats bg-white">
       <div class="stat">
         <div class="stat-title">Operational For</div>
-        <div class="stat-value">2 Years</div>
+        <div class="stat-value">{{ statistics.applicationOnlineTime | duration }}</div>
         <div class="stat-desc">Since launch</div>
       </div>
     </div>
@@ -38,7 +38,7 @@
     <div class="shadow stats bg-white">
       <div class="stat">
         <div class="stat-title">Last Admin Login</div>
-        <div class="stat-value">2 days ago</div>
+        <div class="stat-value">{{ statistics.lastUserLogin | relativeTime }}</div>
         <div class="stat-desc">Most recent login</div>
       </div>
     </div>