Strings in export not t'ified

I moved this to support request because it's a good question to answer.

The demo provided is nothing but a demo. The ultimate purpose of this module is not to generate FAPI arrays; that just so happens to be a capability and is featured in the demo because it was easy to do. Rather, the purpose of this module is to provide a new UI for editing forms in Drupal, including the node form, webforms, and the profile form. The form generation shown in the demo is actually not part of the module at all, but simply part of a demo module that builds on the Form Builder APIs.

So in other words, generating FAPI arrays that are copy/paste-able into modules would likely be provided by a module like Module Builder, that creates sample modules for you, rather than as a part of Form Builder, which is meant to be an API. The demo has this ability just for demonstration.