Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  235aac8f190d4cf3bf7df028cee0149270e2e9c7

Simplify background CSS

PHPUnit's static code analysis complained about this, that's why
I'm touching it. The shortcut property does the exact same. It resets
the background image to none.

Change-Id: I4a7bb046ecc2d3b1df8346c619b274edeec0076d
Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  c0eaf4f572651c35be5ace6b69661d301869e13d

JS and CSS clean up based on static code analysis

Thanks to PHPStorm. I actually found a few bugs, but most stuff is
just unused parameters and such.

Change-Id: Ie6e9fc6dc8e0b63d47b3695ec75dcd68f065e06d