When a sale line has a phantom product (mrp kits) the RMA would not be
possible as the wizard couldn't pair the components moves with the
product in the line. With this approach, we can at least return the
spare components of the original kit line.
We also need some hooks to intervine in the main methods, like in
invoicing.
- Now it's possible to open several RMAs in a sale order from the portal
- A new comment button has been added to allow the portal user to enter
relevant information like serial numbers o issue description.
- If the requested operation isn't set no RMA will be opened
- The RMA product qty is now a numeric control with limits according to
the qty available to return
[FIX] rma,rma_sale: fix linter errors
- Fix thrown error when trying to download a picking from the portal.
- Add the hook method to prepare RMA values from the return pick wizard.
- Add the access rule for portal users.
- Show the portal 'Request RMAs' button on the sales page only to users
related to the sales order.
