Revert "order_type taxonomy and register_order_type() function"
Merge pull request #5814 from woothemes/revert-5804-feature-register-order-type

Revert "order_type taxonomy and register_order_type() function"
removing webkit only styles from email templates;
Merge pull request #5816 from BFTrick/remove-webkit-styles-from-emails

Remove Webkit Styles from Email Templates