New look based on jQuery themes

Since I'm not that fond of designing, I'd rather use someone else's work if possible, so I changed most of Narro's UI to use native jQuery UI elements so that you can apply any jQuery UI theme to change Narro's look.

What you see above is the redmond theme, currently users can't change the theme, but that would be a nice feature to have.

Have a look at the other jQuery themes if you don't like the above ones.