Author: Lars Bonczek
MDL-74433 mod_assign: Fix logging of submission removal
http://git.moodle.org/gw?p=moodle.git;a=commit;h=45b117f8e7ebc513aa7fc3c653452266f708ae9e
http://github.com/moodle/moodle/commit/45b117f8e7ebc513aa7fc3c653452266f708ae9e
+ 4.0 en [eventsubmissionremoved,mod_assign]
+ 4.0 en [reverttodraftforgroup,mod_assign]