R1:6e5565b3ff6d

Clean up a little more Calendar display logic

Summary: Uh, non-all-day-events said 1:30 - 2:29 PM, which is real silly.

Test Plan: Looked at a non-all-day-event.

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D16874