Add setup for shipping account by customer in Agility Shipping
Added setup to allow different Agility Shipping accounts based on Customer and Location. The 1st check will be for an account that is present for Ship From Location and the Ship To Customer. The 2nd check will be for an account that is present for the Ship To Customer. The 3rd check will be for an account that is present for Ship From Location. If no account exists for any of those scenarios, the account information from the Carrier Settings will be used.