Author: cescobedo
MDL-63280 core_message: Create group conversation from group edit page
Allows linking of course groups with conversations when group messaging feature is enabled.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e7f467143f1388b418ffc0c0c40cbd648c0e1c97
http://github.com/moodle/moodle/commit/e7f467143f1388b418ffc0c0c40cbd648c0e1c97
+ 3.6 en [enablemessaging,core_group]
+ 3.6 en [enablemessaging_help,core_group]