Fix for M-273. Input fields for State/Province and Zip Codes had typos in their ng-model bindings.
The State/Province field in the Settings > Shipping > Edit/Add Warehouse Dialog becomes a dropdown when the US or Canada is selected, input field when it's another country.
Split out the Adjust Regional Shipping Rates portion of the Shipping Method Dialog into its own dialog, linked to by the globe icon in the Shipping page's shipping methods section.
Merge pull request #676 from cssquirrel/1.3.0

Fix for M-273 Warehouse Address bug & Other Shipping Page Edits
Merge remote-tracking branch 'merchello/1.3.0' into 1.3.0