Updated mediawiki/extensions
Project: mediawiki/extensions/GettingStarted  ba39ffe7560a4f0a3fb70ddd51c9a3edf256d70f

Remove gradients, minor cleanup

Fix formatting and grammar and duplicate selectors.  Due to the
duplication, one of the gradients was not taking effect previously
anyway.  Also, the new core buttons do not use gradients, so this
moves us a step closer.

Change-Id: Ifc69ee714be897f02964c82e54b765d48849a45f