payment changes, URL changes

[tedder]

It looks like project URLs have changed slightly. There's no longer an ID, but there's a short label?

Also, obviously, the change from Amazon Payments to Stripe. It certainly cuts down on the friction of funding- one login instead of two. Kinda surprised they didn't lower fees at all.

[tedder]

Juts thought of an advantage to Stripe- refunds. That seems to be a big push for Kickstarter.