Author: Andrew Nicols
MDL-67544 mod_forum: Add missing label for discussion move
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8092e7cfa2493f0c2be688641efdf8dad80edc03
http://github.com/moodle/moodle/commit/8092e7cfa2493f0c2be688641efdf8dad80edc03
+ 3.9 en [movethisdiscussionlabel,mod_forum]