Author: Simey Lameze
MDL-9469 mod_forum: add exportforum capability and checks
Part of MDL-66075
http://git.moodle.org/gw?p=moodle.git;a=commit;h=75af28c73fa19174cdd3f8a9ff1c77f10b7096af
http://github.com/moodle/moodle/commit/75af28c73fa19174cdd3f8a9ff1c77f10b7096af
+ 3.8 en [cannotexportforum,mod_forum]