Author: Petr Skoda
MDL-24787 fixing group UI to work for users without roles too
http://git.moodle.org/gw?p=moodle.git;a=commit;h=1c7a2f84dbf54805a35ebed882d98138c1e18188
http://github.com/moodle/moodle/commit/1c7a2f84dbf54805a35ebed882d98138c1e18188
+ 2.0 en [noroles,core_role]