Change-Id: Ifbc678a131116077681337e5fd76f5355734c6a5
Change-Id: I029cf99616cc4c4fdc4977b4b22a690f3f2df1d4
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