code formatting
For some reason this is serialized twice and didn't quite investigate why, just put a fix in for if/when it is.
Added a default transaction address value, that is used if you have never checked out before, and it comes from your login.
Much cleaner code
removed a payment drop down because it was showing up twice on the payment page.  It was showing up twice because it is also  in the element call for each payment option element.
Merge branch 'master' of github.com:zuha/Transactions-Zuha-Cakephp-Plugin