Author: Zig Tan
MDL-61881 report_insights: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=747ac8e9c4a54ee543c92ba912628e91b57d4cb5
http://github.com/moodle/moodle/commit/747ac8e9c4a54ee543c92ba912628e91b57d4cb5
+ 3.5 en [privacy:metadata,report_insights]