adding frontend authentication, starting file priority code

goTorrentWebUI/node_modules/react-dom/node_modules/fbjs/lib/getDocumentScrollElement.js.flow

@@ -1,32 +0,0 @@
-/**
- * Copyright (c) 2013-present, Facebook, Inc.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @providesModule getDocumentScrollElement
- * @typechecks
- */
-
-'use strict';
-
-const isWebkit = typeof navigator !== 'undefined' && navigator.userAgent.indexOf('AppleWebKit') > -1;
-
-/**
- * Gets the element with the document scroll properties such as `scrollLeft` and
- * `scrollHeight`. This may differ across different browsers.
- *
- * NOTE: The return value can be null if the DOM is not yet ready.
- *
- * @param {?DOMDocument} doc Defaults to current document.
- * @return {?DOMElement}
- */
-function getDocumentScrollElement(doc) {
-  doc = doc || document;
-  if (doc.scrollingElement) {
-    return doc.scrollingElement;
-  }
-  return !isWebkit && doc.compatMode === 'CSS1Compat' ? doc.documentElement : doc.body;
-}
-
-module.exports = getDocumentScrollElement;