Angular JS Based JSON File Creator

The application starts with a group of templated items that are then configured and then dropped into a list of objects. There can be multiple items of the same template type, but with different configurations. This list of objects can have any number of items. When the list is complete, the application will take the list and create a JSON document (example attached).

There needs to be a facility to create additional templates.
There needs to be a way to define the transform that takes the template and converts it to JSON.