title: Moving the header when in a UITableView's edit mode
body: <p>I've got a UITableView with custom cells and also a custom header, like so:</p>
  
  <pre><code>--------------------
  |   Header         |
  --------------------
  |     cell         |
  |     cell         |
  |     etc          |
  </code></pre>
  
  <p>Whenever I put it into edit mode, in order to delete cells, it looks like this</p>
  
  <pre><code>--------------------
  |   Header         |
  --------------------
  -  |     cell        
  -  |     cell        
  -  |     etc      
  </code></pre>
  
  <p>As you can see, the table cells are moved right-wards to make room for for the minus icons. However, the header stays in the same position. How would I move the header to the right, to match the cells x-postion below?</p>