Author: Zig Tan
MDL-61567 mod_page: Implement null provider mod_page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f2289ba9a26940e9f756679c53617904332aa575
http://github.com/moodle/moodle/commit/f2289ba9a26940e9f756679c53617904332aa575
+ 3.4 en [privacy:metadata,mod_page]