Author: Zig Tan
MDL-61881 report_log: Implement null privacy provider
http://git.moodle.org/gw?p=moodle.git;a=commit;h=932689aa5e5bfb3015096bddf8bdcd32dde58ab5
http://github.com/moodle/moodle/commit/932689aa5e5bfb3015096bddf8bdcd32dde58ab5
+ 3.3 en [privacy:metadata,report_log]