Add desktop notifications, overridable in the same way as other components (although it's not a react component). Also extend the flux dispatcher a little to be less dumb about dispatching while something else is already dispatching.

skins/base/views/atoms/EnableNotificationsButton.js

@@ -0,0 +1,38 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+'use strict';
+
+var React = require('react');
+
+var EnableNotificationsButtonController = require("../../../../src/controllers/atoms/EnableNotificationsButton");
+
+module.exports = React.createClass({
+    displayName: 'EnableNotificationsButton',
+    mixins: [EnableNotificationsButtonController],
+
+    render: function() {
+        if (this.enabled()) {
+            return (
+                <button className="mx_EnableNotificationsButton" onClick={this.onClick}>Disable Notifications</button>
+            );
+        } else {
+            return (
+                <button className="mx_EnableNotificationsButton" onClick={this.onClick}>Enable Notifications</button>
+            );
+        }
+    }
+});