Updated mediawiki/extensions
Project: mediawiki/extensions/Math  318f6777f5222a95103af52416aeb13b675a86cd

MathJax: Update to version 2.1

http://docs.mathjax.org/en/latest/whats-new-2.1.html

Change-Id: I11123c5ee311369dd4d990417de5a9664d1cd717