Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  271ec67a80676851f73a5adcf0c6273594e20ff8

Update button css from Agora

Css copied from https://github.com/wikimedia/mediawiki-extensions-Agora

Bug: 49112
Change-Id: Ibc5d144a22228fd7ec6e3793bf8d9d6c28748101