Author: Zig Tan
MDL-61568 repository_recent: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=204baa0ef692b400863f24b396c155206a65aee1
http://github.com/moodle/moodle/commit/204baa0ef692b400863f24b396c155206a65aee1
+ 3.5 en [privacy:metadata,repository_recent]