Author: Andrew Nicols
MDL-60096 calendar: Add JS for day view
http://git.moodle.org/gw?p=moodle.git;a=commit;h=3ea4f446bcad07b345eac81f3bc8d2427d4617ac
http://github.com/moodle/moodle/commit/3ea4f446bcad07b345eac81f3bc8d2427d4617ac
+ 3.4 en [daynext,core_calendar]
+ 3.4 en [dayprev,core_calendar]