Author: Juan Leyva
MDL-77893 airnotifier: Allow configuring how to process encrypted notifs
http://git.moodle.org/gw?p=moodle.git;a=commit;h=862a9fb24ce96ed47fbbe4ea5da0030abc69a3f3
http://github.com/moodle/moodle/commit/862a9fb24ce96ed47fbbe4ea5da0030abc69a3f3
+ 4.2 en [donotsendnotification,message_airnotifier]
+ 4.2 en [encryptprocessing,message_airnotifier]
+ 4.2 en [encryptprocessing_desc,message_airnotifier]
+ 4.2 en [sendnotificationnotenc,message_airnotifier]