Rethink how products and producers are handled about copanier HOT 1 CLOSED

Yeah, that's a good idea. We would need to rethink how stuff are handled in general if we want to have multiple collectives use the tool. So :

Here is a dependency thing :

- Collective : 
  - Groups
  - Deliveries
    - active producers
      - referents
    - orders
  - Producers
    - products
      - price

And we might even want to have multiple prices for the producers, in a way that would make the evolutoin of the prices traceable.

from copanier.