WxPython versus Tkinter.

[Martin v. Loewis]

> WxPython Challenge 1 code updated...
> 
>  * Fixed tab traveral
>  * Removed hand-holding code
>  * Removed some cruft
> 
>   https://sites.google.com/site/thefutureofpython/home/code-challenges
> 
> Good luck!

Still crashes the interpreter.

Regards,
Martin