Extracted OroRequireJS bundle as standalone bundle

This should fix #100. Please review my changes before merging
Unit tests build are red

```
1) Oro\Bundle\RequireJSBundle\Tests\Unit\DependencyInjection\ConfigurationTest::testConfigTree with data set #1 (array(array(0, true, 'text/javascript'), 'node', NULL, 'js/test/app.min.js', 3600, array('none', false, true, false, array())), array(array(0, true, 'text/javascript'), 'node', '%kernel.root_dir%/../web', 'js/test/app.min.js', 3600, array('none', false, 1, false, array())))
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
     'build' => Array (...)
+    'cache_impl' => null
 )
```