Migrate Delivery and Inventory related Documents to ZODB Components
@nexedi This also removes InventoryInteractor and instead overrides reindexObject() as this was the sole purpose of that Interactor. See the commit messages for further details. Also, about other Interactors, let me know if I'm wrong but my understanding is this was created for non-ERP5 objects but maybe we can replace them by Interaction Workflow now.