title: JavaFX GridPane - Rearranging or moving nodes in cells
body: <p>I have a 3X3 grid pane. I need to move nodes between cells or remove some nodes at, say, <code>x,y</code> position. In doing so I want the remaining nodes to get rearranged accordingly. Like if I remove the first node, the node at cell <code>0,1</code> should occupy <code>0,0</code> and so on..</p>
  
  <p>I am doing this by DnD. Is there any way to auto arrange the cell nodes, rather than using custom logic on the drop event?</p>