Fix order total calculations
Force customer to login if local account exists and payerstatus is unverified
Merge pull request #62 from haraldpdl/paypal

Fix order total calculations
* Remove osC_Action=close page; move html redirect code to function and call the function when a redirect is needed (one less redirect, yay).
* If EC is selected as a payment method and the shipping address is invalid, skip the checkout payment page and redirect to the checkout confirmation page when a valid shipping address has been entered.
* Also verify transaction in before_process()
* Add useraction=commit so the button label in EC is "Pay Now"; process the order immediately when returning back to the store and skip the checkout confirmation page.
Merge pull request #63 from haraldpdl/paypal

PayPal EC Updates
Only use the javascript redirect for In-Context
Merge pull request #64 from haraldpdl/paypal

Only use the javascript redirect for In-Context
Base TAXAMT value from the line items
Add additional checks for $ppe_secret when getExpressCheckoutDetails() is called
Merge pull request #65 from haraldpdl/paypal

Base TAXAMT value from the line items
Fix checkout confirmation loop; if transaction total does not match order total, redirect to checkout confirmation page so the final order total can be confirmed
Add PayPal Transaction ID to transaction order status info
Reorder configuration parameters
Merge pull request #66 from haraldpdl/paypal

Fix checkout confirmation loop; if transaction total does not match orde...
Only add line items if calculations match order total calculations

Include tax in shipping cost calculations and remove tax from order total calculations
Add order total module calculations to Instant Update
Increase Instant Update callback timeout to 6 seconds
Only add TAXAMT if DISPLAY_PRICE_WITH_TAX is false
Add message stack output to checkout confirmation page
If PayPal transaction total does not match order total, redirect the customer to the checkout confirmation page when returning back to store (otherwise process the order). Add a notice to the checkout confirmation page to confirm the order.
Merge pull request #67 from haraldpdl/paypal

Only add line items if calculations match order total calculations