Some cleanup
Added add/remove category code for section 2
Adding product admin views and index
changed glyphicon
Added some more code to add product
Fixed transformer
More work for product
Correctly add a product and inventory
Added dummy inventory for all items
Show inventory on product page
merged changes from section2_completed
Merged section2_completed
Added preload data for section 3
Fixed type
Added initial cart view
Added initial adding items and added ability to adding to existing cart
Added update and remove functionalities to the cart
Added expiry script for our application
Added indexes to ensure our queries are using them
Added invoice screen