Updated mediawiki/extensions
Project: mediawiki/extensions/Math  ed570661deb74f445fcbf06b8f5b5e2d85feedf4

Improve mathtable

* Add primary key to mathtable
* Unify naming of database files

Bug: 65525
Change-Id: I4f4d31c281257014734e9e3a8d7f1506855ea6d9