Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  001cda55d715c2974fb51b2180489f676cd089c3

Some comments for replacing core mediawiki.ui

This LESS code can be the basis of updated mediawiki.ui in core (bug
54360), but needs some changes and additions.

Change-Id: I4bb7b47f41e2a8620f61aa495889adee5b67b7e4