Feature Request: API to support Download Terms of Use

[ekraffmiller]

Overview of the Feature Request To support production file download in the SPA, we need to add a form for the user to accept terms of use & sign the guestbook, if required (replicating JSF UI).

API requirements:

1. In Get Dataset endpoint, update the response to also return the Guestbook for the dataset, if it exists.
2. Update download API endpoint: Save Guestbook Response - saves the guestbook data entered by the user at time of download.

Download Terms of Use example:

Form for creating a Dataset Guestbook: