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=94b9dad79d06ea5bd81febee0c8faf2308f9272b
http://github.com/moodle/moodle/commit/94b9dad79d06ea5bd81febee0c8faf2308f9272b
+ 2.3 en [forbiddenwsuser,core_webservice]