Author: Zig Tan
MDL-61881 report_participation: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=747373c3f6c404e243c671754afaf5b86d6291a1
http://github.com/moodle/moodle/commit/747373c3f6c404e243c671754afaf5b86d6291a1
+ 3.3 en [privacy:metadata,report_participation]