Bug 33478: Apply formatting to ACCOUNT_CREDIT

Bug 33478: Apply formatting to ACCOUNT_CREDIT

To test:

1. Go to a patron accounting page
2. Create a manual invoice and Save
3. You'll be redirected to the Transactions tab
4. Click the Pay button next to your invoice and confirm Payment
5. Click the Print button next to your Payment
6. Confirm your format settings for ACCOUNT_CREDIT are applied

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>