Author: Frederic Massart
MDL-40055 mod_assign: Replace add_to_log 'submissioncopied'
http://git.moodle.org/gw?p=moodle.git;a=commit;h=89fbc20263db83ffc2f99dd7fb1885dfae68142c
http://github.com/moodle/moodle/commit/89fbc20263db83ffc2f99dd7fb1885dfae68142c
+ 2.6 en [event_submission_duplicated,mod_assign]