npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

bower_components/core-menu/core-menu.css

-/*
-Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
-*/
-
-:host {
-  display: block;
-  margin: 12px;
-}
-
-polyfill-next-selector { content: ':host > core-item'; }
-::content > core-item {
-  cursor: default;
-}