Author: sam marshall
MDL-31957 Course reset: Does not erase activity completion data
http://git.moodle.org/gw?p=moodle.git;a=commit;h=5ae17b09a8cc3cf13ba4f1c4d88948c72df07d38
http://github.com/moodle/moodle/commit/5ae17b09a8cc3cf13ba4f1c4d88948c72df07d38
+ 2.4 en [deletecompletiondata,core_completion]
- 2.4 en [deletecoursecompletiondata,core_completion]