Updated mediawiki/extensions
Project: mediawiki/extensions/Math  b6b70ae3fa3fe2db922f88606cc0a881797b4486

Separating MediaWiki specific files from MathJax module

This commit separates the files wiki2jax.js and texvc.js from the
MathJax modules. This allows for MathJax updates without affecting
MediaWiki files. It also defines the MediaWiki path configuration,
although this will really only be usable in MathJax 2.4. Finally,
it fixes jshint errors in texvc.js and wiki2jax.js

Moved texvc.js and wiki2jax.js to extensions/Math/modules/mediawiki-extensions directory

Change-Id:  I97d68c0555bc9fbdd6bf42912aa249d57b3d9359