feat(global): display a message when no item available in a list view (#263)

app/components/templates/templates.html

@@ -82,6 +82,9 @@
             <div class="title">{{ tpl.title }}</div>
             <div class="description">{{ tpl.description }}</div>
           </div>
+          <div ng-if="templates.length == 0" class="text-center text-muted">
+            No templates available.
+          </div>
         </div>
       </rd-widget-body>
     </rd-widget>

app/components/templates/templatesController.js

@@ -7,6 +7,7 @@ function ($scope, $q, $state, $filter, Config, Info, Container, ContainerHelper,
     network: "",
     name: ""
   };
+  $scope.templates = [];
 
   var selectedItem = -1;