Author: David Mudrak
MDL-25982 Workshop: users from the same group may be excluded from allocation in visible group mode
If the Workshop is in the visible group mode, members of the same group
can be now optionally excluded from random allocation for a given user.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=241e58e44b1e23bbf153c9cf4df5a082a888ea47
http://github.com/moodle/moodle/commit/241e58e44b1e23bbf153c9cf4df5a082a888ea47
+ 2.0 en [excludesamegroup,workshopallocation_random]