Author: sam marshall
MDL-47628 Availability: Restrict by selected grouping button
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a4c318325ca166f3a7af0c9adae25e46a4681400
http://github.com/moodle/moodle/commit/a4c318325ca166f3a7af0c9adae25e46a4681400
+ 2.9 en [restrictbygroup,core_availability]