Author: Michael Aherne
MDL-43669 messaging Enable sending email only from no-reply address
http://git.moodle.org/gw?p=moodle.git;a=commit;h=85614920103f6c2ef9724be49fdb4da18cc3c36f
http://github.com/moodle/moodle/commit/85614920103f6c2ef9724be49fdb4da18cc3c36f
+ 2.7 en [configemailonlyfromnoreplyaddress,message_email]
+ 2.7 en [emailonlyfromnoreplyaddress,message_email]