rename Gittip to Gratipay
CAPS
rename building.gratipay.com to inside.gratipay.com
drop "www."
fix SyntaxError
We're not actually Gratipay, LLC yet
We haven't configured support@gratipay.com yet
Fix up a couple links on About > Contact
Change logo from Gittip -> Gratipay
Prune old image files

Use SVGs now
Put logo variants under assets/
Merge pull request #2643 from gratipay/name-change

Rename Gittip to Gratipay