When the shuttle screen propose a tray based on a tray type and we
are in the 'save' step, where we are supposed to physically putaway
the good and save, we should still be able to change the tray type
to fetch another tray.
Compatibility module between stock_vertical_lift and stock_storage_type
(in OCA/wms).
In the vertical lift's Putaway screen, when a good is scanned for a putaway, the
user has to scan the tray type of the corresponding size, so an empty place in a
matching tray is found. When we use storage types, we should know what tray is
compatible with the storage type.
Changes with this module:
* The storage types of trays cannot be selected in the locations form, they have
to be set in the Tray types.
* In the lift put-away screen, when a package has a storage type, the user isn't
asked to scan a tray type, instead, the putaway of the Package Storage Type is
applied.
Namely, the pick/put/inventory operations are now split in
different models.
Pick and Put share a model and customize their behavior, which is pretty
similar. The inventory operation will have a different view and
different workflow.
This changes will ease a lot the customization of the different
workflows and views.
