Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  7a4e54f8898b68e5edd0133f934681f0cfcc4044

Allow other projects to define their own mobile skin

This also allows you to use the desktop skin
SkinMinerva as the mobile skin.

Change-Id: I350fed006a4666c3900b2e5fa1aa17ea036e7694