MAGETWO-60982: AJAX calls does not process error responses

Author: slopukhov

lib/web/mage/backend/bootstrap.js

@@ -73,10 +73,8 @@ define([
 
         /**
          * Error callback.
-         *
-         * @param {Object} jqXHR - The jQuery XMLHttpRequest object returned by $.ajax()
          */
-        error: function (jqXHR) {
+        error: function () {
             $('body').notification('clear')
                 .notification('add', {
                     error: true,