Author: Damyon Wiese
MDL-33718: Help text change for assignment module.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d9eb908d7416fec98bc6618ff1562b85ec7843af
http://github.com/moodle/moodle/commit/d9eb908d7416fec98bc6618ff1562b85ec7843af
+ 2.3 en [preventlatesubmissions_help,mod_assign]