Author: Kenneth Hendricks
MDL-29795 assign: Add 'Duplicate override' breadcrumb
http://git.moodle.org/gw?p=moodle.git;a=commit;h=eeaefbb850f7c8b64a3f923a071975e1f985eade
http://github.com/moodle/moodle/commit/eeaefbb850f7c8b64a3f923a071975e1f985eade
+ 3.2 en [duplicateoverride,mod_assign]