Change-Id: I8b59cb4c0478ae0fac69f7e309ffb8d0293f1d75
Change-Id: Ie78160d5533a1e674bfac0d07608a5c87ca31953
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