title: JTree disable/overwrite TransferHandler keyboard actions
body: <p>I need to get rid of standard keyboard action handler of TransferHandler class I use for my JTree.
  The JTree implements access-level mechanism that controls if node may or may not be deleted. This behavior is neglected by using keyboard combinations like shift-delete allowing each user to deletre any node from the JTree. </p>
  
  <p>Basically I need the TransferHandler to provide a convenient way of moving and sorting nodes (DnD). That's it.</p>
  
  <p>Thanks in advance.</p>