remove obsolete prototype indicator code, as the jquery one seems to work better

app/assets/javascripts/application.js

@@ -452,41 +452,6 @@ var WarnLeavingUnsaved = Class.create({
 	}
 });
 
-/*
- * 1 - registers a callback which copies the csrf token into the
- * X-CSRF-Token header with each ajax request.  Necessary to
- * work with rails applications which have fixed
- * CVE-2011-0447
- * 2 - shows and hides ajax indicator
- */
-document.observe("dom:loaded", function() {
-  Ajax.Responders.register({
-    onCreate: function(request){
-      var csrf_meta_tag = $$('meta[name=csrf-token]')[0];
-
-      if (csrf_meta_tag) {
-        var header = 'X-CSRF-Token',
-        token = csrf_meta_tag.readAttribute('content');
-
-        if (!request.options.requestHeaders) {
-          request.options.requestHeaders = {};
-        }
-        request.options.requestHeaders[header] = token;
-      }
-
-      if ($('ajax-indicator') && Ajax.activeRequestCount > 0) {
-        Element.show('ajax-indicator');
-      }
-    },
-    onComplete: function(){
-      if ($('ajax-indicator') && Ajax.activeRequestCount == 0) {
-        Element.hide('ajax-indicator');
-      }
-      addClickEventToAllErrorMessages();
-    }
-  });
-});
-
 function hideOnLoad() {
   $$('.hol').each(function(el) {
   	el.hide();
@@ -550,8 +515,14 @@ jQuery.viewportHeight = function() {
 /* TODO: integrate with existing code and/or refactor */
 jQuery(document).ready(function($) {
 
-  /* TODO: This duplicates the ajax indicator code for Prototype.
-     Switch to one implementation that does it all */
+
+  /*
+  * 1 - registers a callback which copies the csrf token into the
+  * X-CSRF-Token header with each ajax request.  Necessary to
+  * work with rails applications which have fixed
+  * CVE-2011-0447
+  * 2 - shows and hides ajax indicator
+  */
   $(document).ajaxSend(function (event, request) {
     var csrf_meta_tag = $('meta[name=csrf-token]');