Author: Marina Glancy
MDL-59496 registration: display unregistered warning consistently
http://git.moodle.org/gw?p=moodle.git;a=commit;h=505bbe7cd684363eefa5d92199be78ffc2ece76b
http://github.com/moodle/moodle/commit/505bbe7cd684363eefa5d92199be78ffc2ece76b
+ 3.4 en [registrationwarningcontactadmin,core_admin]