Author: Michael Hawkins
MDL-66268 forumreport_summary: Add filters handling incl groups filter
Part of MDL-66076.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b29de56dd76c7bc68c3785ba3f8dc1c64d98ccb8
http://github.com/moodle/moodle/commit/b29de56dd76c7bc68c3785ba3f8dc1c64d98ccb8
+ 3.8 en [filter:groupsname,forumreport_summary]
+ 3.8 en [filter:groupscountall,forumreport_summary]
+ 3.8 en [filter:groupscountnumber,forumreport_summary]