title: Cannot remove event from fullcalendar
body: <p>I am using fullcalendar <a href="http://fullcalendar.io/" rel="nofollow">http://fullcalendar.io/</a></p>
  
  <p>whenever my user creates an event on the calendar by selecting a timeslot, he generates an event object with a unique_id which is then pushed into a hidden field as JSON.</p>
  
  <pre><code>   select: function(start, end, id, allDay) {
  
        // generate unique id
        function guid() {
          function s4() {
            return Math.floor((1 + Math.random()) * 0x10000)
              .toString(16)
              .substring(1);
          }
          return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
            s4() + '-' + s4() + s4() + s4();
        }
        var eventData = {
          start: start,
          end: end,
          unique_id: guid(),
          block:  true,
          editable: true,
          backgroundColor: "#469278"
        };
  
  
        // console.log(moment(eventData.start["_d"]).format("dddd"));
        // console.log(moment(eventData.end["_d"]).format("dddd"));
  
  
        $('#calendar').fullCalendar('renderEvent', eventData, true); // stick? = true
  
  
        // console.log(eventData);
        // if (moment(eventData.start["_d"]).format("dddd") != moment(eventData.end["_d"]).format("dddd")) {
        //   $('#calendar').fullCalendar('unselect');
        // }
        // console.log(start);
        var day         = moment(eventData.start["_d"]).format("dddd");
        var start_time  = moment(eventData.start["_d"]).format("HH:mm");
        var end_time    = moment(eventData.end["_d"]).format("HH:mm");
        var id          = moment(eventData.unique_id)["_i"];
        // console.log(id);
        var slot        = {
          day: day,
          start_time: start_time,
          end_time: end_time,
          id: id
        };
        array_dispo.push(slot);
  
        $("#dispo_array").val(JSON.stringify(array_dispo));
        $('#calendar').fullCalendar('unselect');
      },
  </code></pre>
  
  <p>I am then trying to delete this specific event from the calendar by clicking on it using fullcalendar method <a href="http://fullcalendar.io/docs1/event_data/removeEvents/" rel="nofollow">http://fullcalendar.io/docs1/event_data/removeEvents/</a></p>
  
  <pre><code>  eventClick: function(event, element) {
        console.log(event);
        console.log(event.unique_id);
        if(confirm('Voulez-vous supprimer cette dispo?')) {
  
          $('#calendar').fullCalendar('removeEvents', event.unique_id);
  
  
        }
      },
  </code></pre>
  
  <p>Unfortunately the event is never removed from the calendar... Any ideas ?</p>