Base conversion (and alphabetizing imports)

Racpete can now translate numbers between bases! I also made things alphabetical because it was bothering me. The convert-base code is pretty ugly, I think, but I couldn't figure out a good idiomatic way to do it. Point me in the right direction and I can fix it :)
I would suggest moving it into the original file, since you're probably going to be moving stuff around before the request is accepted anyways.
Keeps the code consistent.