Author: Simey Lameze
MDL-65671 calendar: tidy up calendar header
http://git.moodle.org/gw?p=moodle.git;a=commit;h=fed1cc738d80ec729afc266d1d7e46963c8804db
http://github.com/moodle/moodle/commit/fed1cc738d80ec729afc266d1d7e46963c8804db
+ 3.8 en [coursecalendar,core_calendar]