Author: Zig Tan
MDL-61881 report_insights: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=70242a8f172290dc0c92eccab5be7f9f05ea3131
http://github.com/moodle/moodle/commit/70242a8f172290dc0c92eccab5be7f9f05ea3131
+ 3.4 en [privacy:metadata,report_insights]