Change-Id: I248fbd3a7d7aae8e9f2fca7065aa2a28bc324a42
Change-Id: I9c5d319c234ab52e6a7555699f2d9fd2a8d6bb9e
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