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=486e797c5f2cb5aeb17eb9e0b386595d92cc5c8e
http://github.com/moodle/moodle/commit/486e797c5f2cb5aeb17eb9e0b386595d92cc5c8e
+ 3.8 en [viewupcomingactivitiesdue,core_calendar]