title: Fullcalendar event's end time is missing
body: <p>I run Fullcalendar wih this options</p>
  
  <pre><code>defaultEventMinutes:30,
  timeFormat: 'HH:mm { - HH:mm}',
  </code></pre>
  
  <p>I have some events (30 min long each), but only their start time is shown.</p>
  
  <pre><code>10:00 -  
  14:30 -
  </code></pre>
  
  <p>while dragging an event, its start <strong>and</strong> endtime appears as i should be.</p>
  
  <pre><code>10:00 - 10:30  
  14:30 - 15:00
  </code></pre>