Author: Zig Tan
MDL-61568 repository_coursefiles: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=e6df7dfedd2d9069f7f9dc06a4c98b8e8223276f
http://github.com/moodle/moodle/commit/e6df7dfedd2d9069f7f9dc06a4c98b8e8223276f
+ 3.5 en [privacy:metadata,repository_coursefiles]