Updated mediawiki/skins
Project: mediawiki/skins/BlueSky  42e23201a7cfb64291e677767b9ab14d1e11e8a5

Removed OptimizelyJS stuff.

Extensions should remain self-contained. The extension in question should likely be using the SkinAfterBottomScripts hook or alternatively one of the skin's own hooks.

Change-Id: I7c6a2345d50b17eec27ebea6b28831b77904f91f