Author: Michael Hawkins
MDL-66076 forumreport_summary: Groups filter made accessible
http://git.moodle.org/gw?p=moodle.git;a=commit;h=cc15134c7bef8ceb43df72681463b2ed45f37b8b
http://github.com/moodle/moodle/commit/cc15134c7bef8ceb43df72681463b2ed45f37b8b
+ 3.8 en [filter:groupsbuttonlabel,forumreport_summary]