title: How to make a sticky footer and header with a tableview?
body: <p>I have a <code>UITableView</code> in the storyboard with also a header and a footer defined as can be seen in the picture.</p>
  <p><a href="https://i.stack.imgur.com/QLz1B.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QLz1B.png" alt="screenshot" /></a></p>
  
  <p>However, the header disappears when I move the cell (it seems the header is the top cell). Same thing with the footer. It appears after I have browsed through all cells.
  I tried to move the header and the footer outside of the Cell hierarchy. But this resulted in being not visible any more.</p>
  <p>How can I make the header and footer sticky?</p>