Author: Mark Nelson
MDL-54698 core_message: moved 'disable/enable' notifications setting
http://git.moodle.org/gw?p=moodle.git;a=commit;h=812cc6f63f9ce73d891710b25b29929d6315ce2b
http://github.com/moodle/moodle/commit/812cc6f63f9ce73d891710b25b29929d6315ce2b
- 3.2 en [enableall,core_message]