Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  b49bf353e0615fc2884f63b117459a1ed635c6ca

Hygiene: Add proper error reporting in lead image uploads

This will tell us for sure how many uploads fail because of captcha and
AbuseFilter. In the process clean up uploads tests a bit.

Change-Id: Ibc799ddf32924c25a3feb085be354b655c407dce