Added support for trackers that don't set cookies

Not all trackers use cookies, for examples see http://samy.pl/evercookie Specifically, some of the biggest third-party data collectors such as google-analytics or facebook's like button are missed if you only look at those setting cookie. This adds support for those, but marks them a different color to differentiate them from those that do set cookies.

Additionally, this re-enabled the dynamic radius functionality to make frequently hit trackers bigger. Given then busier graph output including more nodes creates, this helps to more quickly differentiate the prime trackers.