fix(autocomplete): store hasNotFoundTemplate in shared element

As before, the `hasNotFoundTemplate` Boolean was stored in the directive function so its used by all `autocomplete` directives, and that's wrong

Fixes #5865

Closes #5867

Author: devversion

src/components/autocomplete/demoInsideDialog/dialog.tmpl.html

@@ -31,7 +31,7 @@ <h2>Autocomplete Dialog Example</h2>
     </div>
   </md-dialog-content>
 
-  <div class="md-actions">
+  <md-dialog-actions>
     <md-button aria-label="Finished" ng-click="ctrl.finish($event)">Finished</md-button>
-  </div>
-</md-dialog>
+  </md-dialog-actions>
+</md-dialog>

src/components/autocomplete/js/autocompleteDirective.js

@@ -118,7 +118,6 @@ angular
  */
 
 function MdAutocomplete () {
-  var hasNotFoundTemplate = false;
 
   return {
     controller:   'MdAutocompleteCtrl',
@@ -145,7 +144,8 @@ function MdAutocomplete () {
       inputId:        '@?mdInputId'
     },
     link: function(scope, element, attrs, controller) {
-      controller.hasNotFound = hasNotFoundTemplate;
+      controller.hasNotFound = element.hasNotFoundTemplate;
+      delete element.hasNotFoundTemplate;
     },
     template:     function (element, attr) {
       var noItemsTemplate = getNoItemsTemplate(),
@@ -154,7 +154,7 @@ function MdAutocomplete () {
           tabindex        = attr.tabindex;
 
       // Set our variable for the link function above which runs later
-      hasNotFoundTemplate = noItemsTemplate ? true : false;
+      element.hasNotFoundTemplate = !!noItemsTemplate;
 
       if (!attr.hasOwnProperty('tabindex')) element.attr('tabindex', '-1');