title: Kendo Scheduler events disappear after cancelling edit
body: <p>I've setup a Kendo Scheduler widget using Kendo Web GPL version 2013.3.1119.</p>
  
  <p>It's mostly working fine, in that events are pulled from the remote SchedulerDataSource and correctly displayed on the calendar with their associated resource.</p>
  
  <p>The problem is ... when I double-click an event the popup editor is displayed containing the correct data, but if I click Cancel or the close 'X', the event is removed from the calendar.</p>
  
  <p>There are no errors, the event just disappears.</p>
  
  <p>Any ideas what may be causing this?</p>