determine variants with remaining items
go to shipment review before creating a new
Create New Stock Location Button
Create Stock Items when Stock Location is created
ui pages for creating shipments from stock_locations
extract new shipment logic into remaining_packer, allow backordered inventory_units to be added to new shipments
Setup source and destination polymorphic associations on stock movements
Merge branch 'split_shipments' of https://github.com/spree/spree into fix_product_stock_styles

* 'split_shipments' of https://github.com/spree/spree:
  Setup source and destination polymorphic associations on stock movements
  extract new shipment logic into remaining_packer, allow backordered inventory_units to be added to new shipments
  ui pages for creating shipments from stock_locations
  Create Stock Items when Stock Location is created
  Create New Stock Location Button
  go to shipment review before creating a new
  determine variants with remaining items
Add more styling to product stock management