Change-Id: I2b104798c539f011d44d38c5713aa24518458b32
Change-Id: I595e405f1ae1fbb2732b4e3cdad6b26b4938c9d3
This is the final step of the process described at <https://www.mediawiki.org/wiki/Separating_skins_from_core_MediaWiki>. Corresponding core change: Idfc38503. Change-Id: I84fcf7ce6385b8323544cafe6912a00f1886d20d