Author: Sara Arjona
MDL-61957 gradereport_user: Implement privacy API
http://git.moodle.org/gw?p=moodle.git;a=commit;h=54d35aec033c6c8859b825bcc35f44568f20bb92
http://github.com/moodle/moodle/commit/54d35aec033c6c8859b825bcc35f44568f20bb92
+ 3.4 en [privacy:metadata:preference:gradereport_user_view_user,gradereport_user]