chore(docs): remove Disqus comments

We don't actively moderate these comments, and they range from
out of date, to inflammatory, to spam. Going forward, improvements
to the docs should be done via a PR, and questions should go on
StackOverflow where they can be curated and kept up to date by
AngularJS developers who help out there.

Author: btford

docs/src/templates/index.html

@@ -335,9 +335,8 @@ <h4>{{ key }}</h4>
 
         <div ng-hide="loading" ng-include src="currentPage.partialUrl" onload="afterPartialLoaded()" autoscroll class="content slide-reveal"></div>
 
-        <div id="disqus" class="disqus">
-          <h2>Discussion</h2>
-          <div id="disqus_thread" class="content-panel-content"></div>
+        <div class="alert alert-info">
+          <a href="http://blog.angularjs.org/2013/11/farewell-disqus.html">Where did Disqus go?</a>
         </div>
       </div>
     </div>

docs/src/templates/js/docs.js

@@ -680,7 +680,6 @@ docsApp.controller.DocsController = function($scope, $location, $window, $cookie
     var currentPageId = $location.path();
     $scope.partialTitle = $scope.currentPage.shortName;
     $window._gaq.push(['_trackPageview', currentPageId]);
-    loadDisqus(currentPageId);
   };
 
   /** stores a cookie that is used by apache to decide which manifest ot send */
@@ -892,29 +891,6 @@ docsApp.controller.DocsController = function($scope, $location, $window, $cookie
       return namespace;
     }
   }
-
-
-  function loadDisqus(currentPageId) {
-    // http://docs.disqus.com/help/2/
-    window.disqus_shortname = 'angularjs-next';
-    window.disqus_identifier = currentPageId;
-    window.disqus_url = 'http://docs.angularjs.org' + currentPageId;
-
-    if ($location.host() == 'localhost') {
-      return; // don't display disqus on localhost, comment this out if needed
-      //window.disqus_developer = 1;
-    }
-
-    // http://docs.disqus.com/developers/universal/
-    (function() {
-      var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
-      dsq.src = 'http://angularjs.disqus.com/embed.js';
-      (document.getElementsByTagName('head')[0] ||
-        document.getElementsByTagName('body')[0]).appendChild(dsq);
-    })();
-
-    angular.element(document.getElementById('disqus_thread')).html('');
-  }
 };