Added standard layouts for ANSI and ISO.

After the confusion in this thread http://geekhack.org/index.php?topic=35065.msg949401#msg949401 I decided to add standard ANSI and ISO layouts and make ANSI the default. Moved the initial layout from alaricljs to a seperate one.

I have no ISO keyboard, so I'm not 100% sure that the ISO layout is right. I just copied the one which was commented out but I guess it should work. Feedback is appreciated.