Pay per view in OJS 3.1

@ asmecher Since OJS 3.1.2 and OJS 3.1.2-1 are essentially same, is there a quick fix that implements the pay-per-view feature in OJS 3.1.2 as well?

Secondly, does the pay-per-view work with manual payments? (We still didn’t get PayPal to work in OJS 3.1.2.)

Finally, I suggested in another request that we be enabled creating one-time download links for the purchaser - both for automated and manual payments. Any plans for that?