Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  dae9d9e72787517425a1d5d831ba80e798c978d3

Story 1462: Move new languages overlay to stable

Create a separate initialization file for stable and beta (stable
doesn't have dynamic loading of languages or secondary page actions
yet).

Also, add a browser test for closing the language overlay.

Change-Id: I73f1f69dd8be27b6893276a5394751e924b2f1ab