Made no changes to Purchase Order Controller on accident.

Inventory Controller now handles a new request for adding an item

Inventory Controller test has a test to ensure the url can be handled by
the new add item controller.
Removed the inventory object due to database schema change.

Inventory Items was updated to relfect the addition of the quantity
field to the table.

Inventory XML was refactored to remove the inventory bean

The test xml files where updated to run tests accurately.

Inventory Controller was updated to update the new Inventory Item.
Updated unit test.

Update inventory controller to not use the depricated inventory object.
Added a mapper bean to do conversion to and from json
Merged my mistake