Removing referrer test for donations since it's buggy
Fixing stupid bug with location hash being cleaned before it's used
Including pagseguro payments. Refs #21
Changing Brazilian PayPal link for a Canadian one. Refs #21
Replacing shitty PagSeguro by PayPal s2 again.

Refs #21
Reason: PagSeguro cannot provide a go-back link
or redirect after the transaction.

*PagSeguro is good, they say. GOODBYE UX, THEY SAY.*