title: Drag an event in fullCalendar component with a specific duration
body: <p>I've seen the solution to <a href="http://arshaw.com/js/fullcalendar-1.5.4/demos/external-dragging.html" rel="nofollow">drag and drop external events in fullcalendar</a>. But, in this demo, all the external events have a duration of 2 hours (because defaultEventMinutes parameter is set to 120). I'm trying to change this demo in order to manage events with different durations. Say, "My event 1" is 45min long, "My event 2" is 165min, etc.</p>
  
  <p>At the beginning I though there may be an attribute to store the duration in the eventObject, but according to the documentation, it's not the case.
  Then, I thought it would be possible to change the value of 'defaultEventMinutes' when starting dragging the event. But apparently, I can't do it without rebuilding the whole calendar.</p>
  
  <p>According to you, what is the best means to meet this requirement?
  Thanks in advance for your advice...</p>