Updated mediawiki/extensions
Project: mediawiki/extensions/UploadWizard  6fde05968a10dc91d09f0cd409da923bbe57967c

Appease the new test suite

It needs to see an autoloader entry for every class, I guess, and this one
was missing. So here we are.

Change-Id: Ife37e8720121f9fa7fad875d44e83ec6818d8172