initialize the user registration language code to request.LANGUAGE_CODE (selected language or default setting)
YUI Loader
Processes dependencies and dynamically loads script and css for YUI and external modules.
3.0.0
* Extracted from the YUI seed. Now fetched dynamically if
there are missing dependencies if not included.
* Reads metadata from on-page modules registered via Y.add if the module is not already known.
* Many new modules, many modules reorganized, dependency information has been tuned.