Started working on a tkinter wrapper to cut down on code clutter.  After
looking into the work involved and comparing to wxpython I've decided to
move to wxpython for the GUI.  I'm committing this in case wx doesn't work
out and I need to revert to tkinter.  Thankfully only PHdisplay.py will need
to be rewritten, the database layer shouldn't need to be changed.  Since the
logic is so entangled with the tkinter code that too will need to be redone,
which would probably happen anyway to take advantage of wx's different set
of capabilities.