Author: Sara Arjona
MDL-62266 core_availability: Implement privacy API
http://git.moodle.org/gw?p=moodle.git;a=commit;h=636a50044b20495a00597f5520a12a0d75957514
http://github.com/moodle/moodle/commit/636a50044b20495a00597f5520a12a0d75957514
+ 3.4 en [privacy:metadata,core_availability]