Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  e4b8014cbb73c66d01b81c19fe117cf54fc5b9b6

Make UWU and UWUI event emitters

Also, move setUploadFilled parts to each of them.

I also mucked with indentation and the way we assign global class
objects, but it shouldn't be a big deal.

Change-Id: I7039eb3dc9da64d30e35775b5347033ced798c3f