Updated mediawiki/skins Project: mediawiki/skins/GreyStuff fe9ed97ce85dd2bdda531053059bf1f0e0a2e6f8

Mobile fixes and general cleanup

• Turn the footer navigation into accordion menus for mobile/whatever
• Generally cleanup layout of mobile footer display
• Fix various weird float bugs in mobile browsers (mobileClears)
• Revert sideways arrows for dropdown menus; will always point down now
• Fix margin on contentSub

Change-Id: Ie40e4620a88493748f1fdb2ab732b56091958572