Author: Ryan Wyllie
MDL-54698 message: make preferences page ajax save
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a0eabdd3c8e8bcdf11dfebbea9a43a22ea968883
http://github.com/moodle/moodle/commit/a0eabdd3c8e8bcdf11dfebbea9a43a22ea968883
+ 3.2 en [alwayssend,core_message]
+ 3.2 en [messagepreferences,core_message]
+ 3.2 en [messageprocessors,core_message]