Quality fixes.

lms/static/js/student_account/models/user_account_model.js

 ;(function (define, undefined) {
     'use strict';
     define([
-        'gettext', 'underscore', 'backbone',
+        'gettext', 'underscore', 'backbone'
     ], function (gettext, _, Backbone) {
 
         var UserAccountModel = Backbone.Model.extend({
@@ -25,7 +25,7 @@
                 default_public_account_fields: []
             },
 
-            parse : function(response, xhr) {
+            parse : function(response) {
                 if (_.isNull(response)) {
                     return {};
                 }

lms/static/js/student_account/models/user_preferences_model.js

 ;(function (define, undefined) {
     'use strict';
     define([
-        'gettext', 'underscore', 'backbone',
+        'gettext', 'underscore', 'backbone'
     ], function (gettext, _, Backbone) {
 
         var UserPreferencesModel = Backbone.Model.extend({

lms/static/js/student_account/views/account_settings_factory.js

@@ -6,7 +6,7 @@
         'js/student_account/models/user_account_model',
         'js/student_account/models/user_preferences_model',
         'js/student_account/views/account_settings_fields',
-        'js/student_account/views/account_settings_view',
+        'js/student_account/views/account_settings_view'
     ], function (gettext, $, _, Backbone, FieldViews, UserAccountModel, UserPreferencesModel,
                  AccountSettingsFieldViews, AccountSettingsView) {
 
@@ -116,7 +116,7 @@
                             })
                         }
                     ]
-                },
+                }
             ];
 
             if (_.isArray(authData.providers)) {
@@ -145,14 +145,14 @@
 
             accountSettingsView.render();
 
-            var showLoadingError = function (model, response, options) {
+            var showLoadingError = function () {
                 accountSettingsView.showLoadingError();
             };
 
             userAccountModel.fetch({
-                success: function (model, response, options) {
+                success: function () {
                     userPreferencesModel.fetch({
-                        success: function (model, response, options) {
+                        success: function () {
                             accountSettingsView.renderFields();
                         },
                         error: showLoadingError

lms/static/js/student_account/views/account_settings_fields.js

@@ -4,8 +4,6 @@
         'gettext', 'jquery', 'underscore', 'backbone', 'js/mustache', 'js/views/fields'
     ], function (gettext, $, _, Backbone, RequireMustache, FieldViews) {
 
-        var Mustache = window.Mustache || RequireMustache;
-
         var AccountSettingsFieldViews = {};
 
         AccountSettingsFieldViews.EmailFieldView = FieldViews.TextFieldView.extend({
@@ -31,7 +29,7 @@
                     url: '/i18n/setlang/',
                     data: data,
                     dataType: 'html',
-                    success: function (data, status, xhr) {
+                    success: function () {
                         view.showSuccessMessage();
                     },
                     error: function (xhr, status, error) {
@@ -65,7 +63,7 @@
                     type: 'POST',
                     url: view.options.linkHref,
                     data: data,
-                    success: function (data, status, xhr) {
+                    success: function () {
                         view.showSuccessMessage()
                     },
                     error: function (xhr, status, error) {
@@ -79,7 +77,7 @@
                     gettext('We\'ve sent a message to {email_address}. Click the link in the message to reset your password.'),
                     {'email_address': this.model.get(this.options.emailAttribute)}
                 );
-            },
+            }
         });
 
         AccountSettingsFieldViews.LanguageProficienciesFieldView = FieldViews.DropdownFieldView.extend({
@@ -149,7 +147,7 @@
                     url: this.options.disconnectUrl,
                     data: data,
                     dataType: 'html',
-                    success: function (data, status, xhr) {
+                    success: function () {
                         view.options.connected = false;
                         view.render();
                         view.showSuccessMessage();
@@ -166,7 +164,7 @@
 
             successMessage: function() {
                 return this.indicators['success'] + gettext('Successfully unlinked.');
-            },
+            }
         });
 
         return AccountSettingsFieldViews;

lms/static/js/student_account/views/account_settings_view.js

 ;(function (define, undefined) {
     'use strict';
     define([
-        'gettext', 'jquery', 'underscore', 'backbone',
+        'gettext', 'jquery', 'underscore', 'backbone'
     ], function (gettext, $, _, Backbone) {
 
         var AccountSettingsView = Backbone.View.extend({

lms/static/js/views/fields.js

@@ -485,7 +485,7 @@
                     title: this.options.title,
                     linkTitle: this.options.linkTitle,
                     linkHref: this.options.linkHref,
-                    message: this.helpMessage,
+                    message: this.helpMessage
                 }));
                 return this;
             },