Submission Fact Sheet and UI

@ mention of reviewers`

@ckcollab`

A brief description of the purpose of the changes contained in this PR.

UI to add questions that are serialized to JSON

The response is then saved as a JSON field under the parent submission.

Issues this PR resolves

Resolves #427 (closed)

TODO

Add caching for fact_sheet answers

A checklist for hand testing

• Competitions with no fact_sheet will now show text field in the submission tab
• Competitions with a fact_sheet will show text field
• fact_sheet_answers will only allow correctly formatted JSON
• fact_sheet_answer will only allow matching keys and keys from list
• answer values prompts given "" will accept any string input

Checklist

• Code review by me
• Hand tested by me
• I'm proud of my work
• Code review by reviewer
• Hand tested by reviewer
• Ready to merge