Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  83073d606c8dea3d5842795785fcd6cb7d24e7c4

Hygiene: Rename to mode

Now modules code has moved into Mantle this code simply deals with
the concept of stable, beta and alpha so let's name it accordingly.

Change-Id: Idd3e0f690c7efc756d77ada49578d8a2918cee22