Expose Copy and Archive (Model Backups) in API

[james.fantaski]

Currently model backups can only be done via the application interface.  The company I am working for does these backups daily and since we support a large number of models this turns out to be a very time consuming process of accessing each model individually and initiating the archiving via the web browser.

Exposing this functionality in the API would be a tremendous time saver for any organizations that support a lot of different models!

This would allow companies to schedule model backups at a certain time intervals or initiate a backup of all of the models they support with the click of a button.