Make it possible to enable "SaveResponses" through API and UI

[dukeofharen]

Pull request type

Please check the type of change your PR introduces:

• [ ] Bugfix
• [X] Feature
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] Documentation content changes
• [ ] Other (please describe):

What is the new behavior?

A new API endpoint is added to update configuration through the API (right now only storeResponses). The UI is updated so the setting can be updated.

Does this introduce a breaking change?

• [ ] Yes
• [X] No