fix(universal): remove browser check from style-utils

- Remove default value of fxLayout to avoid confusion in Universal
- Removed browser checks from style-utils since getDOM will always
  return an implementation with the methods implemented
- Added note about getComputedStyle PR pending
- Updated RxJS to 5.5.0 and added necessary fixes
- Added better null and type checking throughout
- Updated LICENSE

  Closes #466

Author: CaerusKaru

LICENSE

@@ -1,6 +1,6 @@
 The MIT License
 
-Copyright (c) 2017 Google, Inc.
+Copyright (c) 2017 Google LLC.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

build-config.js

@@ -10,7 +10,7 @@ const buildVersion = require('./package.json').version;
 /** License that will be placed inside of all created bundles. */
 const buildLicense = `/**
  * @license
- * Copyright Google Inc. All Rights Reserved.
+ * Copyright Google LLC All Rights Reserved.
  *
  * Use of this source code is governed by an MIT-style license that can be
  * found in the LICENSE file at https://angular.io/license