Author: Martin Gauk
MDL-85488 mathjax: refactor loader to enhance configuration and loading
http://git.moodle.org/gw?p=moodle.git;a=commit;h=db8f7fc95a5593db90992a2e9b4e97f58b2e19ea
http://github.com/moodle/moodle/commit/db8f7fc95a5593db90992a2e9b4e97f58b2e19ea
+ 5.0 en [mathjaxsettings_desc,filter_mathjaxloader]