Clear tables before helper tests.
Add notes about import of product data.
Fix the bug on the test by using stub.
Adjust the rake task to import lot_nos.
Import open-uri for web services.
Add inventory function to product model.
Import open-uri lib.
Fetch inventory data via web service.
Parse the response from web service.
Add the inventory function.
Create admin/product_inventories controller as a resource.
Add inventory to the nav menu.
Implement the search action and its page.