Determine new scalable way to define make menu items and bind events

[dougthor42]

TODO on line 103 of wm_frame.py:
# TODO: There's gotta be a more scalable way to make menu items
# and bind events... I'll run out of names if I have too many items.
# If I use numbers, as displayed in wxPython Demo, then things
# become confusing if I want to reorder things.

Basically I want to be able to arbitrarily add and move around menu items and still have them bind to the correct events.

Also need to separate out the menu creation code. I don't like how messy it is.