#123 - Adds image consent field to drawings

[steverabino]

Addresses issues: #123 and #83

What this does

• [x] Adds image_consent field to Drawings
  • Must be true or false before drawing can be saved
  • Existing images will have an “unknown” status until they are edited, at which point, the checkbox will be ticked (obviously can be unticked), at which point they will no longer have an “unknown” state
  • For new images, the checkbox will be ticked by default (obviously can be unticked)
  • Wording based on previous tickets:
    • "Consent given by artist to share image on open source data platforms as deemed appropriate"
• [x] Adds front-end form element to Drawings form view to collect data.
• [x] Adds front-end element to Drawing show view to show data.
• [ ] Front end love
  • [ ] Confirm wording on form, validation messages, and drawing show view
  • [x] Bolden the text on form elements?
  • [ ] Re-jig where the form elements are?

What this needs

1. Reviews
2. Someone to pick up the front-end tasks, make it a bit more pleasant to the eye

Screenshots

Before

After

[krissy]

Looking good! One main comment that might kill 2 birds re not allowing nulls on the field.