npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

bower_components/core-menu-button/core-menu-button.css

Index: bower_components/core-menu-button/core-menu-button.css
diff --git a/bower_components/core-menu-button/core-menu-button.css b/bower_components/core-menu-button/core-menu-button.css
deleted file mode 100644
index b74c4a9c6c6fd431ce427c97a433b409549402b1..0000000000000000000000000000000000000000
--- a/bower_components/core-menu-button/core-menu-button.css
+++ /dev/null
@@ -1,18 +0,0 @@
-/*
-Copyright 2013 The Polymer Authors. All rights reserved.
-Use of this source code is governed by a BSD-style
-license that can be found in the LICENSE file.
-*/
-
-:host {
-  position: relative;
-  display: inline-block;
-}
-
-#dropdown {
-  margin: 12px;
-  background: #fff;
-  color: #000;
-  border-radius: 3px;
-  border: 1px solid #ccc;
-}