Author: Sara Arjona
MDL-61957 gradereport_singleview: Implement privacy API
http://git.moodle.org/gw?p=moodle.git;a=commit;h=caeb922dea650baacbbb70f39f61ff2c2a1b8c80
http://github.com/moodle/moodle/commit/caeb922dea650baacbbb70f39f61ff2c2a1b8c80
+ 3.3 en [privacy:metadata,gradereport_singleview]