Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  31a95b3c79e0ddf6fd66155bff5229e303edca5c

Regression: Correctly use extend

extend alters the first argument.
don't do this otherwise lead photo overlay and friends have the
title 'Issues'

Change-Id: I8361042573f3b42cf5f3c5088c8274dfbe68929f