Fixed it!

I needed to tell the IntVar's that they were connected to the proper
Tk() instance. I don't even know...
I deleted some debugging stuff from the last commit.

And I moved forward on the commenting. It's going pretty well,
though I've just realized that there's some amount of fractured-ness
in my code. I should either comment it really well, or put it together somehow.
And I think I have a bunch of unused variables laying around, I should take
care of those too.