Italian translation and dictionary

I know this project seems abandoned, but I'll try to post this anyway.

I added the files for italian translation and think this could be merged into the master stuff...
Also made a little change which seems to make sense to me: backspace now removes last typed letter instead of the whole word...

Oh, and I also made a different background - just  because I couldn't manage to edit the previous one replacing the strings with the italian ones, but if someone thinks the previous looks better I have nothing against using that, provided that someone can replace the strings mentioned above...

Any feedback on this (especially from @patthoyts who seems to be the last contributor)?