Problem if author does not like review and does not pay reviewer (declines review)
We decided with Arne that if an author does not like the review and declines it, he should not be able to get the 'review money' back from the contract. E. g. the money should stay in the contract and be available for another reivew.
We need to make sure author cannot get money back (for the declined reivew) by reducing review slots or setting paper state to final, if he has declined a review.