removed mirror, further developed piano

I decided that for things like Glype and possibly RainLoop or
phpMyAdmin, I would use another host, such as my main website. I
therefore removed the mirror "experiement".

I also further developed Piano. It has hjkl and axml keybindings both at
once now, and I've started making a nicer fail screen than a JavaScript
confirm() box. I also fixed the game being playable after failing and
cancelling the pop-up.