minor cleanup.

UI/Mixins/backbone.Backgrid.mixin.js

@@ -53,8 +53,12 @@ Backgrid.NzbDroneHeaderCell = Backgrid.HeaderCell.extend({
 
     direction: function (dir) {
         if (arguments.length) {
-            if (this._direction) this.$el.children('i').removeClass(this._convertDirectionToIcon(this._direction));
+            if (this._direction) {
-            if (dir) this.$el.children('i').addClass(this._convertDirectionToIcon(dir));
+                this.$el.children('i').removeClass(this._convertDirectionToIcon(this._direction));
+            }
+            if (dir) {
+                this.$el.children('i').addClass(this._convertDirectionToIcon(dir));
+            }
             this._direction = dir;
         }
 
@@ -74,7 +78,9 @@ Backgrid.NzbDroneHeaderCell = Backgrid.HeaderCell.extend({
                     if (leftVal === rightVal) {
                         return 0;
                     }
-                    else if (leftVal > rightVal) { return -1; }
+                    else if (leftVal > rightVal) {
+                        return -1;
+                    }
                     return 1;
                 });
             }
@@ -85,7 +91,9 @@ Backgrid.NzbDroneHeaderCell = Backgrid.HeaderCell.extend({
                     if (leftVal === rightVal) {
                         return 0;
                     }
-                    else if (leftVal < rightVal) { return -1; }
+                    else if (leftVal < rightVal) {
+                        return -1;
+                    }
                     return 1;
                 });
             }

UI/Release/Model.js

@@ -1,5 +1,5 @@
 "use strict";
-define(['app'], function (app) {
+define(['app'], function () {
     NzbDrone.Release.Model = Backbone.Model.extend({
      /*   mutators: {
             seasonNumber: function () {

UI/Shared/Modal/Region.js

@@ -15,7 +15,7 @@ define(function () {
             return $el;
         },
 
-        showModal: function (view) {
+        showModal: function () {
             this.$el.addClass('modal hide fade');
 
             //need tab index so close on escape works

UI/Shared/SpinnerView.js

@@ -1,4 +1,6 @@
-define(['app'], function () {
+"use strict";
+
+define(['app'], function () {
     NzbDrone.Shared.SpinnerView = Backbone.Marionette.ItemView.extend({
         template : 'Shared/SpinnerTemplate',
         className: 'nz-spinner row'