npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

bower_components/core-dropdown/core-dropdown.css

Index: bower_components/core-dropdown/core-dropdown.css
diff --git a/bower_components/core-dropdown/core-dropdown.css b/bower_components/core-dropdown/core-dropdown.css
deleted file mode 100644
index 5b03d4a05997781273577ff216178efb204987c6..0000000000000000000000000000000000000000
--- a/bower_components/core-dropdown/core-dropdown.css
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
-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 {
-  position: absolute;
-  overflow: auto;
-  background-color: #fff;
-}