START MIGRATION TO NEW v8 WAREHOUSE MANAGEMENT SYSTEM

[FIX] no longer IN AND OUT, so remove OUT view inherit and rename IN
[FIX] rename all references to stock.picking.in and .out to just stock.picking
[FIX] use picking_type_id.code instead of .type, and convert to use new values
[FIX] action_assign_wkf changed to action_assign
[FIX] after performing action_assign, check picking state before uploading