title: iOS 7 UITableViewCellSeparatorStyleSingleLineEtched
body: <p>I discover that in a iOS7 <code>UITableView</code> (in plain and in grouped style) is the same set the separator style in <code>UITableViewCellSeparatorStyleSingleLineEtched</code> or <code>UITableViewCellSeparatorStyleNone</code>. The table view appears without separator. It's a bug?</p>