Retina graphics / Favicon

[Swiftnesses]

Guys,

I know, it's a minor issue...

It would be great if you could offer the graphics @2x for retina screens as currently the covers look pretty terrible. Also, quick fix, can we boost the favicon to 32x32?

Cheers for the recent improvements,

Mark

[NULLx76]

Added a pull request for the 32x32 favicon