title: JSTree - How to force user tp only select leafs of the tree
body: <p>Within my JStree i want the user to only be able to select leafs of the tree. E.g.: Nodes that have no childs. My idea is to bind the select event and manually check whether the selected node has childs and then select/not select the node accordingly. </p>
  
  <p>Is there a simpler way? or is this obvious solution the only one? </p>