title: Directus many-to-many display template not showing up
body: <p>I'm not sure <em>where</em> <strong>Display Template</strong> option is supposed to show up on M2M relationships.</p>
  
  <p>Here on <code>movies</code> collection setting up <code>genres</code>:</p>
  
  <p><a href="https://i.stack.imgur.com/1PoGa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1PoGa.png" alt="Relation"></a></p>
  
  <p>and the options</p>
  
  <p><a href="https://i.stack.imgur.com/L7rB9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/L7rB9.png" alt="enter image description here"></a></p>
  
  <p><a href="https://docs.directus.io/guides/relationships.html#many-to-many" rel="nofollow noreferrer">Docs</a> seems confusing about the distinction between Visible Columns and Display Template:</p>
  
  <blockquote>
    <p><strong>Visible Columns</strong> sets the columns the interface shows (we're using <code>name</code>)</p>
    
    <p><strong>Display Template</strong> sets the columns the interface shows (we're using <code>{{movie.name}}</code>)</p>
  </blockquote>
  
  <p>Visible Columns does the above; in this example shows the <code>title</code> column in edit page for <code>genres</code>:</p>
  
  <p><a href="https://i.stack.imgur.com/6vClc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6vClc.png" alt="enter image description here"></a></p>
  
  <p>Alright, great!</p>
  
  <p>But what about the template? maybe in the collection list? </p>
  
  <p>no, just the count:</p>
  
  <p><a href="https://i.stack.imgur.com/DFprc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DFprc.png" alt="enter image description here"></a></p>
  
  <p>I've tried all these templates but nothing shows up anywhere:</p>
  
  <ul>
  <li><code>{{title}}</code></li>
  <li><code>{{movie.title}}</code></li>
  <li><code>{{genre.title}}</code></li>
  <li><code>{{genres.genre.title}}</code></li>
  </ul>
  
  <p>What is the correct template here? Where is Display Template supposed to show up?</p>
  
  <p>My collections setup:</p>
  
  <pre><code>movies
   title text,
   genres M2M (alias)
  
  genres
   title text
  
  movies_genres
   id pk,
   genre numeric,
   movie numeric
  </code></pre>
  
  <p>Thanks</p>