title: fullcalendar is not working on internet explorer 11
body: <p>i have json that containes two events.</p>
  
  <p>On ie 11 the events renders on the same day,
  one is on the 26/5/2014 and the other is in 27/5/2007</p>
  
  <pre><code>var myevents =[{"id":99,"title":"","start":"2014-05-26T07:30:00Z","end":"2014-05-26T13:00:00Z","color":"#fff","textColor":"#000","borderColor":"#000","allDay":false},{"id":101,"title":"","start":"2014-05-27T13:00:00Z","end":"2014-05-27T17:00:00Z","color":"#fff","textColor":"#000","borderColor":"#000","allDay":false}]
  
  $('#calendar').fullCalendar({
  header: {
      left: 'prev,next today',
      center: 'title',
      right: 'month,agendaWeek,agendaDay'
  },
  editable: true,
  year: 2014,
  month: 4, 
  events: function (start, end, callback) {
      //console.log(myevents);
      var obj = myevents//jQuery.parseJSON(myevents);
      var events = new Array();
  
      $.each(obj, function (index, value) {
          console.log(value)
          event = new Object();
          event.id = value['id']
          event.title = value['start'];//value['id'];
          event.start = value['start'];
          event.end = value['end'];
          event.color = value['color'];
          event.textColor = value['textColor'];
          event.borderColor = value['borderColor'];
          event.allDay = false;
          console.log(event);
  
          events.push(event);
      });
      callback(events);
  }
  });
  </code></pre>
  
  <p><a href="http://jsfiddle.net/hLw3W/2/" rel="nofollow noreferrer">http://jsfiddle.net/hLw3W/2/</a>
  <img src="https://i.stack.imgur.com/NFMTG.png" alt="enter image description here"></p>