Two issues prevented the shelf tree reordering from working:
- The JS used ``onDragStop`` (only fires for drags outside the
tree) instead of the ``tree.move`` event to send the AJAX
request. Moved the POST into the ``tree.move`` handler.
- The ``inside`` case used ``appendNode`` (last child), but
jqTree sends ``inside`` when dropping before the first child.
Switched to ``prependNode`` so the node lands first.
- Added missing ``before`` case with ``insertBeforeNode``.
cd5d72e272