Author: Jerome Mouneyrac
MDL-28126 webservices : should not able to create token if user is deleted,unconfirmed,suspended or guest.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e922d9a90bab337b1082fbe28c352c18cae2580e
http://github.com/moodle/moodle/commit/e922d9a90bab337b1082fbe28c352c18cae2580e
+ 2.0 en [forbiddenwsuser,core_webservice]