title: How do I make an entry field optional?
body: <p>I have made an entry field required somehow but I'm not sure how. When editing a tag, the tag owner entry field should be able to be empty.
  <img src="https://imgur.com/Hcor4.png" alt="alt text"></p>
  
  <p>I have set "allow nulls" in the database table:</p>
  
  <p><img src="https://imgur.com/d0Heu.png" alt="alt text"></p>
  
  <p>Does anyone know how I can fix it? To be clear, I want the above form to be submitted without requiring a value for tag_owner.</p>