Updated mediawiki/extensions
Project: mediawiki/extensions/BetaFeatures  5d90d6fe468eccaedcecf35b45804613f77044db

Switch from CSS to LESS and use MediaWiki's SVG fallback LESS function

I imagine that a number of improvements to the LESSification could be made, but this
is a start.

Bug: 56502
Bug: 56729
Change-Id: I1058314861bdd23ce9d0a6462d54df2bb4247b35