Logging changes

Changed some values for logging purposes
Renamed weight label

Renamed weight label to published weight
Added shipping box list function

Added a function which generates a list of shipping boxes in option form
based on a shipping method passed to it
Added dynamic weight to packing screen

Set up the pack order screen so that the weights would dynamically
change. Included adjusting the JS on the packing page and the function
which returns lines of item data in the shippingItem model.
Created an ajax value php file.