Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  4f0dfed6f18ef01c1205b222b3aed4e8cd260a89

Update cookie name in QA tests

The name of the cookie used to trigger the mobile mode changed in
1fb258a0df8e9bb7cbbee57c3ecb7f0ea81914f0 to mf_useformat.

Change-Id: Iaf1df35c4bbcfa90cb32d2c67ae633b398cc86d6