Added base template for config ui.

appengine/config_service/ui/bower_components/polymer/lib/legacy/polymer-fn.html

+<!--
+@license
+Copyright (c) 2017 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
+-->
+
+<link rel="import" href="class.html">
+
+<script>
+
+  (function() {
+    'use strict';
+
+    /**
+     * Legacy class factory and registration helper for defining Polymer
+     * elements.
+     *
+     * This method is equivalent to
+     * `customElements.define(info.is, Polymer.Class(info));`
+     *
+     * See `Polymer.Class` for details on valid legacy metadata format for `info`.
+     *
+     * @override
+     * @function Polymer
+     * @param {Object} info Object containing Polymer metadata and functions
+     *   to become class methods.
+     * @return {Polymer.LegacyElement} Generated class
+     */
+    window.Polymer._polymerFn = function(info) {
+      // if input is a `class` (aka a function with a prototype), use the prototype
+      // remember that the `constructor` will never be called
+      let klass;
+      if (typeof info === 'function') {
+        klass = info;
+      } else {
+        klass = Polymer.Class(info);
+      }
+      customElements.define(klass.is, klass);
+      return klass;
+    };
+
+  })();
+
+</script>