ecommerce 6.x-4.1

Just a little more cleaning up on some of the theming issues and added a new hook to allow additional filtering on what payment gateways are available.

Also some cleaning up of the code so that it mostly passes the coder tests, and make sure that all the tests are running and passing correctly.

Now that all the last parts are cleaned up I will now going to split off and start on the port to Drupal 7.x, but I am going to be making sure that both the 6.x and the 7.x release remain inline.

This will be much easier when git is finally all running, as I should be able to just cherry-pick the changes between releases without issue.

Changes since DRUPAL-6--4-0:

• Remove a couple of filters which have not yet been implemented.
• #854758 by bjraines: Update Quantity on Checkout Page.
• #986994 by thirupathi43: Fixed error coming.
• Tiny bit of reformatting of the cart to bring it into line with the checkout.
• Fix up minor issue with theming the items in the checkout page
• Format the basic paypal icon on the page
• Fix issue where data associated with the cart item is lost when updated.
• Clean up all the source so that it passes the coder test (mostly)
• Fix up exception which was created when the anonymous feature didn't exist.
• Clean up some translation issues
• Add new hook_ec_receipt_type_filter() to allow other modules to other modules to filter which payment gateways are available
• Add documentation for the hook_ec_receipt_type_filter()
• Fix up failing tests.