title: Angular UI bootstrap - show dropdown on typeahead-no-results
body: <p>tryng to get a dropdown when no result on typeahead but, the drop down menu dosen't show
  view</p>
  
  <pre><code>&lt;div class="dropdown"&gt;
      &lt;div class="form-group"&gt;
         &lt;input placeholder="Vælg kunde" type="text" ng-model="customer"  typeahead-editable="false" uib-typeahead="customer as customer.customer for customer in customers | filter:$viewValue | limitTo:8" class="form-control"
              typeahead-popup-template-url="customPopupTemplate.html"
              typeahead-min-length="0"
              typeahead-no-results="noResults"&gt;
      &lt;/div&gt;
  
      &lt;div ng-if="noResults" dropdown-toggle&gt;
         &lt;ul class="dropdown-menu" &gt;
             &lt;li&gt;&lt;a href="#"&gt;No result&lt;/a&gt;&lt;/li&gt;
         &lt;/ul&gt;
      &lt;/div&gt;
  
  &lt;/div&gt;
  </code></pre>
  
  <p>removing class="dropdown-menu" gives me the li with no result, but i dont get it as a dropdown menu</p>
  
  <p>who do i toggle this dropdown menu on no result ?</p>