Author: Tim Hunt
MDL-3030 quiz overdue handling: new settings on quiz form and admin.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=87427d9c7cf9fa36c70dbc7be743333ce68f582e
http://github.com/moodle/moodle/commit/87427d9c7cf9fa36c70dbc7be743333ce68f582e
+ 2.3 en [graceperiod,mod_quiz]
+ 2.3 en [graceperiod_desc,mod_quiz]
+ 2.3 en [graceperiod_help,mod_quiz]
+ 2.3 en [graceperiodmin,mod_quiz]
+ 2.3 en [graceperiodmin_desc,mod_quiz]
+ 2.3 en [overduehandling,mod_quiz]
+ 2.3 en [overduehandling_desc,mod_quiz]
+ 2.3 en [overduehandlingautosubmit,mod_quiz]
+ 2.3 en [overduehandlinggraceperiod,mod_quiz]
+ 2.3 en [overduehandlingautoabandon,mod_quiz]