Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  c4dfc91eaacf2e3b8d65b92ed9977c91f4c5d56c

Move button styles to separate module

Removes 8 KiB from *uncompressed* initial payload

Also added missing dependency to jquery.cookie to ext.uls.init

Change-Id: If0e30d3822fa7db317d53a0a58051295da0ec0e6