Update Mustache to v2.2.1

src/brackets.js

@@ -114,6 +114,23 @@ define(function (require, exports, module) {
             return CodeMirror;
         }
     });
+
+    // DEPRECATED: Mustache.compile has been deprecated since Mustache 0.8,
+    // but for now we use a polyfill for it so as to avoid breaking extensions in the
+    // interim.
+    Object.defineProperty(window.Mustache, "compile", {
+        get: function () {
+            DeprecationWarning.deprecationWarning('Use Mustache.parse(templateName) instead of Mustache.compile. For more information see https://github.com/janl/mustache.js/issues/346.', true);
+
+            return function (template) {
+                Mustache.parse(template);
+
+                return function (view, partials) {
+                    return Mustache.render(template, view, partials);
+                };
+            };
+        }
+    });
 
     // Load modules that self-register and just need to get included in the main project
     require("command/DefaultMenus");

src/extensibility/ExtensionManagerView.js

@@ -37,6 +37,9 @@ define(function (require, exports, module) {
         LocalizationUtils         = require("utils/LocalizationUtils"),
         itemTemplate              = require("text!htmlContent/extension-manager-view-item.html");
 
+    // Parse item template for future use
+    Mustache.parse(itemTemplate);
+
     /**
      * Creates a view enabling the user to install and manage extensions. Must be initialized
      * with initialize(). When the view is closed, dispose() must be called.
@@ -56,7 +59,6 @@ define(function (require, exports, module) {
         var self = this,
             result = new $.Deferred();
         this.model = model;
-        this._itemTemplate = Mustache.compile(itemTemplate);
         this._itemViews = {};
         this.$el = $("<div class='extension-list tab-pane' id='" + this.model.source + "'/>");
         this._$emptyMessage = $("<div class='empty-message'/>")
@@ -100,12 +102,6 @@ define(function (require, exports, module) {
      */
     ExtensionManagerView.prototype._$table = null;
 
-    /**
-     * @private
-     * @type {function} The compiled template we use for rendering items in the extension list.
-     */
-    ExtensionManagerView.prototype._itemTemplate = null;
-
     /**
      * @private
      * @type {Object.<string, jQueryObject>}
@@ -336,7 +332,7 @@ define(function (require, exports, module) {
             context[helper] = registry_utils[helper];
         });
 
-        return $(this._itemTemplate(context));
+        return $(Mustache.render(itemTemplate, context));
     };
 
     /**