* Correct the dependencies for ext.uls.core, it need not depend on
mediawiki.Uri.
* Move the setlang function out of ULS core js.
* Add a callback function to the example.
Change-Id: Ie3598236b2a884580092194c57558ec109d20803
* Remove jquery.viewport which was not able to give correct viewport
relative to container.
* The scroll syncing part is written by Niklas
Change-Id: I1cbeaa2a5c297deab7338f331d8db69c17aa2214