Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  69e8212ef010ed1e25957212942bc25c1b423920

Regression: Stop low res main menu icon from 404ing due to move

Follow up to I4365f914f95a8b4d1f2d9ab2e37614e835cc2fc5

Change-Id: Id95b18a22fac371b1e0aa7682e18be073305ed2c