No functionality should be GUI-only. Make all functionality reachable via the API

[pdurbin]

As explained in our "Dataverse API Strategy (High-Level)" doc at https://docs.google.com/document/d/1gxiKGtHjZJmyLaO6j2rPTBwTNxFZazmVb9I-BlF0iMk/edit?usp=sharing there should be no functionality in Dataverse that is GUI-only. All functionality should be reachable via the API.

Please use this description to keep a running list of GUI-only functionality:

• API: allow file restriction through API #3873 Restricting files (added in 3776 public only #3967)
• As a dataverse user, I would like to get info about access restrictions on file level through the API #4645 get info about access restrictions on file level
• API call to deaccession datasets #778 Deaccessioning datasets
• Setting Terms of Use
• Set "Enable Access Request" for Terms of Use: https://groups.google.com/d/msg/dataverse-community/oKdesT9rFGc/qM6wrsnnBAAJ
• Set guestbook_id for a dataset: https://groups.google.com/d/msg/dataverse-community/oKdesT9rFGc/qM6wrsnnBAAJ
• Filling out a guestbook. See also https://groups.google.com/d/msg/dataverse-dev/G9FNGP_bT0w/dgE2Fk4iBQAJ
• Downloading a guestbook
• Submit for Review workflow via API #3144 Submit for Review workflow via API (added in 3943 Submit for Review via new API, Return to Author with reasonForReturn via new API, new notifications API, new "workflowcomment" table #3992)
• Setting a dataverse logo
• Seeing why a file failed ingest
• Notifications (partially added in 3943 Submit for Review via new API, Return to Author with reasonForReturn via new API, new notifications API, new "workflowcomment" table #3992)
• API for creating OAI-PMH sets is "TODO" #4095 Creating OAI-PMH sets (added in API for creating OAI-PMH sets #4096)
• Adding descriptions and tags to files - added in 4.6.1 as part of Allow file uploads for non-zip files through the API #1612: http://guides.dataverse.org/en/4.6.1/api/native-api.html#files
• editing properties of an existing dataverse
• get/set methods for dataset metadata
• setting logo image / url / "tagline" for dataverse during creation
• templates

[djbrooke]

Thanks @pdurbin - this will be useful for tracking items that we should make API-accessible. Once it comes time to work on these, we'll break into smaller chunks.