Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  5e92f4a77f828f53b10cf669b681fb0b59db8586

Regression: Restore external links icons

Move content images to content folder

Fixes broken external link images, since the styles for those
were moved in Ife4b510c1663d6da5691bcc3714908810615aa40

Change-Id: I387d4c4ac9b180d59bf11a4bdb5cc9e487355a35