Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  964d50b59394298160a5845f912837f9ee2fb22c

Making sure proper header styles are applied to talk page overlay

The "Reply" header is a special overlay header rather than a
content header, so it needs the mw-mf-overlay-header class.

Change-Id: I9463decfbd04b0e66db23ea72e79beebde75c0ab