Fix bug w/ all day events (hr, min, sec need to be zero in DTSTART)

* For some reason, the recurrence expansion system requires hr, min, and sec
  to be zero for DTSTART when allDay=1
* Force hr, min, and sec to zero for all day events

Bug: 2427658
Change-Id: Ief6b5b571fa6bc6947bcbc9cda02ab2c04f27549
1 file changed