Feature #644: add an order validation process
Orders status managment
According to this specs : https://forge.easysdi.org/projects/easysdi/wiki/4_shop_orders_and_products_status, some behaviours seem to be missing :
- status "historize" must be dropped.
- status "archived" can be set only manually by the user, on all "finished" orders.
- files linked to an order are clean up by the system, like now, but the process will no more affects the status : "finished" orders will be cleaned up after the retention delay and will keep theirs status