title: iOS 7 UITableView: How to remove space between navigation bar and first cell
body: <p>Description of the problem: with iOS 7 in grouped <code>UITableView</code> there is a gap between the top of the table view and the first cell.</p>
  <p>The strange part is that when I load the content for the first time the table appears to be ok (first image), but when I scroll down a space appears between top and first cell (second image):</p>
  <p><img src="https://i.stack.imgur.com/GOR3u.png" alt="enter image description here" /> <img src="https://i.stack.imgur.com/y1G4q.png" alt="enter image description here" /></p>
  <p>With style plain this behavior does't occur but unfortunately I need to use the grouped table view style.</p>
  <p>Any ideas about?</p>