#29 - Allow submitting from backend without cvv

See #29 (closed)

This worked in v2.4 - if the civicontribute component setting to require submitting without a cvv from the backend was off, then you could submit without a cvv. Now it gives an error.

I went with:

• If it's present (e.g. optional but has been entered), then submit it regardless.
• If it's not backend, then submit it.
• If the civi setting requires it, then submit it.

I tested both front and backend. It's difficult from the authnet sandbox to tell what it checked and didn't, but you can trigger a fail by using cvv 901, so when that failed I at least knew it submitted it correctly.

merged

mentioned in commit 66792ecd

Thanks!