Author: Zig Tan
MDL-61568 repository_user: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=948d3f566f9f15a5f4ce80fff975ba2764674ed5
http://github.com/moodle/moodle/commit/948d3f566f9f15a5f4ce80fff975ba2764674ed5
+ 3.3 en [privacy:metadata,repository_user]