FEATURE: Display Shipping Methods As Radio Button

- Added the option to display shipping method as radio buttons or
drop-down on Shopping Cart & One Page Checkout.
- Added shipping method sorting options (Sort Order, Rate, Name)
- Added an option to Auto-Estimate Shipping on Shopping Cart with
settings for Auto-Estimation Shipping Address.

Shopping Cart Theme Setting for Display Type:

One Page Checkout Theme Setting for Display Type:

Global Theme Setting for Sort Field 1 & Sort Field 2

Store Shipping Options - Auto-Estimation Settings:

Shopping Cart Shipping Methods Displayed as Radio Buttons (sorted by rate and then name):

One Page Checkout Shipping Methods Displayed as Radio Buttons: