Revert "Correcting relation between payment and reservation"

This reverts commit e7569464bd2c50c76edca3194e93c0bec0734962.
Revert "Renaming credit to ranking and creating payments"

This reverts commit f8aaa29a5a5ba5d17acd1a26229c2f7b2d1f9c35.
Moving assets to correct place
Generating payments