enable payments (wip)
proper tests for payments
handle case where fee isn't paid in email
updated pay page
Claim#payment_fee_group_reference

Aggregates the fee_group_reference and payment_attempts to provide
a reference to give to the payment gateway. This means users can fail
and retry payments (unique references must accompany each attempt)
while not having to send it to Jadu.
progress on confirmation page
fixed broken link to pdf form
Integration fixes
Download PDF on confirmation page as per notable
Merge pull request #400 from ministryofjustice/feature/enable-payments

Enable payments