Show 'No stock locations found' rather than a dodgy looking table when there are no stock locations
Redirect to stock locations page if there is no stock location on 'Stock Management' page for a product

Fixes #3304
Fix duplicate spree i18n namespacing.

Fixes #3311
Fixes untranslated select option None.

Fixes #3311
add table_name to fix "order created_at" exception error

Fixes #3305
Fixes #3309