Updated mediawiki/extensions
Project: mediawiki/extensions/UniversalLanguageSelector  47d5bda290caebe6f7fbb55bb06c300e35fe1029

Updated to the new version of mediawiki-selenium gem

Needed to fix security problem with passwords being visible at Jenkins
machine.

Change-Id: Id828486113804bdc9e4afeba50d74c11bbb57d57