title: How can I group data with an Angular filter?
body: <p>I have a list of players which belong to a group each. How can I use a filter to list the users per group?</p>
  
  <pre><code>[{name: 'Gene', team: 'team alpha'},
   {name: 'George', team: 'team beta'},
   {name: 'Steve', team: 'team gamma'},
   {name: 'Paula', team: 'team beta'},
   {name: 'Scruath of the 5th sector', team: 'team gamma'}];
  </code></pre>
  
  <p>I'm looking for this result:</p>
  
  <ul>
  <li>team alpha
  <ul>
  <li>Gene</li>
  </ul></li>
  <li>team beta
  <ul>
  <li>George</li>
  <li>Paula</li>
  </ul></li>
  <li>team gamma
  <ul>
  <li>Steve</li>
  <li>Scruath of the 5th sector</li>
  </ul></li>
  </ul>