Updated mediawiki/skins
Project: mediawiki/skins/BlueSky  a0dd23d498a0f11d7701fdedb715efe874f3f09e

* Removed some legacy code
* Removed a few more instances of $wgTitle
* Fixed the "Create article" button and allowed it to link to an external site
* Added/Update documentation

Change-Id: Icc8dfaf61ee97a023cf32268f91d3b52e6f56fa0