Start and end dates on the same day

If the dates range over the same day on the patient view, this PR causes it to only be shown once.
Looks good, I think you can skip out on the `true if` part though, right? as this is basically the same as `true if true`. I think you should be able to get away with `display_end_time: @model.get('end_time')? and formatTime(@model.get('end_time')) isnt formatTime(@model.get('start_time'))`.