added extension.js, trying to add legacy sprites for tree icons, updates tree icon filters (still not working)

src/Umbraco.Web/UI/JavaScript/Main.js

@@ -1,6 +1,6 @@
 require.config("##RequireJsConfig##");
 
-require("##RequireJsInitialize##", function (angular, app) {
+require("##RequireJsInitialize##", function (angular, app, jQuery) {
 
     //This function will be called when all the dependencies
     //listed above are loaded. Note that this function could

src/Umbraco.Web/UI/JavaScript/RequireJsConfig.js

@@ -4,6 +4,7 @@
     paths: {
         jquery: '../lib/jquery/jquery-1.8.2.min',
         jqueryCookie: '../lib/jquery/jquery.cookie',
+        umbracoExtensions: '../lib/umbraco/extensions',
         bootstrap: '../lib/bootstrap/js/bootstrap',
         underscore: '../lib/underscore/underscore',
         angular: '../lib/angular/angular.min',
@@ -21,6 +22,7 @@
         css: '../lib/require/css'
     },
     shim: {
+        'umbracoExtensions' : {'exports' : 'umbracoExtensions'},
         'angular' : {'exports' : 'angular'},
         'angular-resource': { deps: ['angular'] },
         'bootstrap': { deps: ['jquery'] },

src/Umbraco.Web/UI/JavaScript/RequireJsInitialize.js

@@ -1,8 +1,9 @@
-[
+[    
     'angular',
-    'app',
+    'app',    
     'jquery',
     'jqueryCookie',
+    'umbracoExtensions',
     'bootstrap',
     'umbraco.resources',
     'umbraco.directives',