Author: David Monllaó
MDL-66091 analytics: Targets choose if there should be a report or not
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b2d9aaa1262e0e5a089c92bd5fadb36b0f7e79ba
http://github.com/moodle/moodle/commit/b2d9aaa1262e0e5a089c92bd5fadb36b0f7e79ba
+ 3.7 en [viewupcomingactivitiesdue,core_calendar]