Updated mediawiki/skins
Project: mediawiki/skins/BlueSky  84cd8b358cc8e89c530cc12053325a1c8a82f974

* Renamed the main classes to remove wikiHow references.
* Removed some custom wH things
* Fixed up some awful code to properly use SpecialPage::getTitleFor() and
* the appropriate MediaWiki messages instead of assuming that everything is always in English
* Fixed Special:Notifications URL when Echo is installed
* Added missing $wgStylePath to a few places
* Removed some unused global variables
* Removed some commented-out code

Change-Id: Ie71521f426ff73f3dc805f6e3d4d79e19476646b