Move payment_authorized state to waiting_confirmation

The state `waiting_confirmation` has a lot of important things that we didn't planed for `payment_authorized` state. Also the `waiting_confirmation` wasn't current been used on Neighbor.ly.

With this change we have:
- When project reach out the deadline it will check if has contributions waiting for confirmation and will not finish the project until the payments are confirmed or canceled.
- We check every day if is there contribution waiting confirmation more then 6 week days, if so, it will cancel the contribution.

Also on this PR, I did some refactoring removing the 'boleto bancario' referencies.