Author: Raymond Wijaya
MDL-34794_M23: Add reset course feature in mod_assign (new assignment)
http://git.moodle.org/gw?p=moodle.git;a=commit;h=10839ace75f9b5c2849f1a7fc051a9ddc1c9f92a
http://github.com/moodle/moodle/commit/10839ace75f9b5c2849f1a7fc051a9ddc1c9f92a
+ 2.3 en [deleteallsubmissions,mod_assign]