Added base template for config ui.

appengine/config_service/ui/bower_components/shadycss/src/common-regex.js

+/**
+@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
+*/
+
+export const VAR_ASSIGN = /(?:^|[;\s{]\s*)(--[\w-]*?)\s*:\s*(?:((?:'(?:\\'|.)*?'|"(?:\\"|.)*?"|\([^\)]*?\)|[^};{])+)|\{([^\}]*)\}(?:(?=[;\s}])|$))/gi;
+export const MIXIN_MATCH = /(?:^|\W+)@apply\s*\(?([^);\n]*)\)?/gi;
+export const VAR_CONSUMED = /(--[\w-]+)\s*([:,;)]|$)/gi;
+export const ANIMATION_MATCH = /(animation\s*:)|(animation-name\s*:)/;
+export const MEDIA_MATCH = /@media[^(]*(\([^)]*\))/;
+export const IS_VAR = /^--/;
+export const BRACKETED = /\{[^}]*\}/g;
+export const HOST_PREFIX = '(?:^|[^.#[:])';
+export const HOST_SUFFIX = '($|[.:[\\s>+~])';