Author: Andrew Davis
MDL-49319 core_registration: altered registration strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a1645892092d7f10eccdcb40229b733c2d4047e5
http://github.com/moodle/moodle/commit/a1645892092d7f10eccdcb40229b733c2d4047e5
+ 2.7 en [registermoodleorg,core_admin]
+ 2.7 en [registerwithmoodleorg,core_admin]
+ 2.7 en [registeredon,core_hub]
+ 2.7 en [registrationconfirmedon,core_hub]