Save current state.

[Shad0wSeven]

this is a very very minor inconvenience but I was told to put it here anyways.
As someone studying silver/gold problems D:, and preferring to sort by difficulty, It's a bit weird to always start in platinum sorted by contest, and then have to switch to gold/silver and then sort by difficulty, It would be really nice if USACO Rating saved the last division and sort you were using, so every time you opened it it would just go right back to where you were.

Again minor inconvenience, but I think it would make the tool feel a lot smoother.

Thanks so much for developing this tool!