title: Add node to KendoUI TreeView does not work as expected
body: <p>I am researching the Kendo TreeView widget from the documentation. I am trying to add a predefined node (which is a div with some input elements) to a TreeView structure. This is the example I follow:</p>
  
  <p><a href="http://demos.kendoui.com/web/treeview/api.html" rel="nofollow">http://demos.kendoui.com/web/treeview/api.html</a></p>
  
  <p>I am able to append the node only once and it disappears. I am not very familiar with jquery and javascript so any help with working example will be greatly appreciated. Here is jsfiddle sample:</p>
  
  <p><a href="http://jsfiddle.net/MwHNd/454/" rel="nofollow">http://jsfiddle.net/MwHNd/454/</a></p>
  
  <p>To reproduce the bug, try to add the node with AppendNode button several times. Thank You!</p>