Author: Zig Tan
MDL-61881 report_competency: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=00ab1f6e5840cfca0c7cdfcb285887a7c20768bc
http://github.com/moodle/moodle/commit/00ab1f6e5840cfca0c7cdfcb285887a7c20768bc
+ 3.4 en [privacy:metadata,report_competency]