Change-Id: I7347296f64b026517687bc60f8c279edf4c2a42d
Change-Id: I20b5f0a528567bbf1fde11de8c1c339b920d4ed9
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