Fixes:

- If there is only 1 payment type, say credit card, the credit card fields do not show up

- Shipping methods pricing is updated correctly now when adding/removing items from cart

- Admin Account Creation set to true now works where it sends customer auto generated password if this is set to true

- Shipping/Payment methods not being selected by default

- Some updates from var sessions to $_SESSION ( for globals compatibility )

- Shipping address not populating for logged in customers ( on initial page load )

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