* Get the tree renderer fixed so you can set selected="true" to select
  any newly added nodes.
* have a set of 'common attributes' for each node that come up in plain
  site so you can easily tweak things.
* It should ask you for the 'name' at least when creating objects/windows
* Generally streamline the UI so that it's fast to build things.
* Fix up the top menus (add save tree, cut/copy/paste etc.)
* cut/copy/paste of tree sections

(From Johannes)

* check the result of entity:languages and install
  buttons for the supported languages.

* add an `edit xml' function in a choosable editor
  (defaulting to $EDITOR %s)

* add an update option to update the tree.
  if this could be done by stemwinder.e automatically
  this would be even better.

* add a function to expand a complete tree and subnodes
  or collapse (maybe starting from a selected node).
  Suppose I want to access a node deep inside then
  it's awkward to click on all the +'s to open each node.