Add gaug.es tracking code; #824
Add gaug.es tracking code; #824

The product does look better than GA. Let's run both for a while and
then maybe drop GA?

gratipay/gratipay.com,mccolgst/www.gittip.com,studio666/gratipay.com,studio666/gratipay.com,bountysource/www.gittip.com,studio666/gratipay.com,gratipay/gratipay.com,eXcomm/gratipay.com,eXcomm/gratipay.com,eXcomm/gratipay.com,studio666/gratipay.com,mccolgst/www.gittip.com,gratipay/gratipay.com,eXcomm/gratipay.com,gratipay/gratipay.com,mccolgst/www.gittip.com,bountysource/www.gittip.com,mccolgst/www.gittip.com,bountysource/www.gittip.com,bountysource/www.gittip.com