Add test for /about/charts.json & use utc today.
Add test for /about/charts.json & use utc today.

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