Author: Brian Barnes
MDL-48482 core_admin: Added additional label for durations
http://git.moodle.org/gw?p=moodle.git;a=commit;h=60b57b618967587a6d49e3332328dd74350dd186
http://github.com/moodle/moodle/commit/60b57b618967587a6d49e3332328dd74350dd186
+ 2.9 en [durationunits,core_admin]