Updated mediawiki/extensions
Project: mediawiki/extensions/Math  13df3c9b0cd13a096c4e917012bef4fefef3f4e7

MathJax: Listen for wikipage.content hook

This brings us one step closer to solving the JS rendering bug. The
remaining issue is how to know that the enabler script needs to be
loaded.

Bug: 36060
Change-Id: I9cbd032afaf90a735c92f055c2bf82766e9acbe0