Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  bdbba065293335e009ed08d64614adf80b56fd66

Add controllers for each step - mostly stubs

I did move the arrow and div handling to a parent controller class, but
that's about the only grand-scheme win here. The Thanks page is now in
its own controller class paired with a UI class.

Change-Id: Ia536ce35de67f7c6d141a7dd7bd9775eed940016