Author: David Monllao
MDL-50142 editor: Refining editor preference help
All credit goes to Helen Foster.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e3e4358287ab0174d014d3b4fdf45246931a4a53
http://github.com/moodle/moodle/commit/e3e4358287ab0174d014d3b4fdf45246931a4a53
+ 2.9 en [textediting_help,core]