Author: Luca Bösch
MDL-48971 groups: Add "Description" label to hovered group description.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=def68a4344b66992563d994590357b6312a322c8
http://github.com/moodle/moodle/commit/def68a4344b66992563d994590357b6312a322c8
+ 3.7 en [descriptiona,core]