Change-Id: I71c4d643ce1d137826bbb0b69a2e9fde7177a132
Change-Id: I45b5223bee3fbf916b5141194f6cb3ef967030f0
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