As the transporter interfaces will put a label on every package,
it is in handy to have a field with the list of the final packages
(and their weights) treated in the picking.
We give a weight for the products that are not in a package also(bulk).
We only put the weight on the package in the views.
The weights in the product form views should appear entirely or not in
product / product templates (only when only 1 variant)
(attrs was only on the field, not label, ...)
The digits= for the weights are not needed as there is a decimal precision
on these fields.
* migration to new API
* removed delivery.grid object, has been merged with delivery.carrier
* change view of delivery.carrier (price rules, etc.)
* tests from yml to py
* website : restrict the list of countries for delivery address in the shop
Richard Mathot