When we return JSON to the Java side it does not have the proper methods such as Contact.save() so we need to cast the JSON to the correct JS object. This used to be done from the Java layer calling the right method to cast the JSON. In this new approach the JavaScript layer will no what needs to be cast and call it's own internal function to do the cast.
I did my best to clean up the JavaScript so it would pass through jsHint more cleanly. There still are issues but there are a lot fewer now. This helped to make the JS code more consistent.
macdonst