handle process models with called activities with forms that move

[burnettk]

let's say you have process model A that calls process model B at location hot-location-1/b, and that has form json hot-location-1/b/form.json. you start an instance. then you move process model B to location hot-location-2/b. when your old instance tries to access the form, it fails.

potentially save the full path files like json schemas when the instance is created.

the only way any of this can work is if you are integrated with git.