R1:42a877622859

Time controls should format end date value correctly (not 5:0 PM)

Summary: Fixes T9296

Test Plan: Create an event, change start time to `3PM`, end value should update to `4:00 PM`, not `4:0 PM`

Reviewers: chad, epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin

Maniphest Tasks: T9296

Differential Revision: https://secure.phabricator.com/D15725