UPS Shipping Meta cleanup
add meta alias for 'shipping_state', for backwards compatibility
* stop overwriting customer meta
* stop looking for shipping parameters in post args that will not be there when quotes are calculated from places other than the checkout form
* get shipping parameters from customer meta using current meta names
* code style and standards updates
send region code rather than state name
Merge pull request #1221 from JeffPyeBrook/pr-1120-ups-shipping-issues

UPS Shipping Meta cleanup