Updated mediawiki/extensions
Project: mediawiki/extensions/MobileFrontend  9da29dbddf2d21d9958e8f45ee162def31f45d2f

Hygiene: Kill navigation.less

* Only apply background color to body tag
* Clean up background color on #mw-mf-page-center for clarity


Change-Id: I37c54023b0829cf97ea989cdc03ac0d6db6cdb71