Author: Thom Rawson
MDL-54551 core: AJAX call redirects to login page when session expired
http://git.moodle.org/gw?p=moodle.git;a=commit;h=acf94de6d5cd0b857b605679567a37ee8f2516c3
http://github.com/moodle/moodle/commit/acf94de6d5cd0b857b605679567a37ee8f2516c3
+ 3.6 en [servicerequireslogin,core_webservice]