Shows two array controllers, one to manage the contents of a table view, the 
other to manage a pop-up menu in a table column. Also shows two value 
transformers to alter the color of text.

Originally from `Cocoa Bindings Examples and Hints`__, converted to PyObjC 
by u.fiedler.

.. __: http://homepage.mac.com/mmalc/CocoaExamples/controllers.html