Author: David Mudrak
MDL-27508 workshop shows submissions per group in the submission phase
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1c0c3ef5ee683e4c802923127fd178c38f6af9b3
http://github.com/moodle/moodle/commit/1c0c3ef5ee683e4c802923127fd178c38f6af9b3
+ 2.3 en [allsubmissions,mod_workshop]
+ 2.3 en [groupnoallowed,mod_workshop]