Author: Juan Leyva
MDL-55923 webservice: Allow user to sign-out systems on pwd change
http://git.moodle.org/gw?p=moodle.git;a=commit;h=9d382a948ebebef821b16e872efacf9794cda3da
http://github.com/moodle/moodle/commit/9d382a948ebebef821b16e872efacf9794cda3da
+ 3.2 en [signoutofotherservices,core]
+ 3.2 en [signoutofotherservices_help,core]
+ 3.2 en [userservices,core_webservice]