Updated mediawiki/extensions
Project: mediawiki/extensions/ZeroRatedMobileAccess  a9686052b17a4074fc4ba37ac1599dc0e18471a6

Move Vary: headers setup from MF

The same header setup will stay in MF until this commit is deployed everywhere,
it doesn't cause duplicate headers.

Change-Id: If37856d0d15c9a94d2ccba5ff82a1d2155fda8bb