Habitat support -- for VM dev environments, pre-enter db pwd and bypass admin rename
clean up shipping modules for easier $final_shipping_cost
Adds consistent variables weight, total and count from cart, reducing redundant repeat calls of cart object methods (in some, but not all, files)
Merge pull request #132 from ajeh/shipping-module-updates

clean up shipping modules for easier $final_shipping_cost
Merge pull request #127 from drbyte/habitat-override

Habitat support -- for VM dev env, pre-enter db pwd and bypass admin rename