Author: Mark Nelson
MDL-55623 core_message: indicate who the message is from
http://git.moodle.org/gw?p=moodle.git;a=commit;h=89a70ba1a5b952540740c488c5459548f4962025
http://github.com/moodle/moodle/commit/89a70ba1a5b952540740c488c5459548f4962025
+ 3.2 en [you,core_message]