title: Adding Rounded Corners to UIView without breaking interactions.
body: <p>This answer works great, <a href="https://stackoverflow.com/questions/8621798/adding-rounded-corners-to-only-top-of-uitableview">Adding Rounded Corners to only top of UITableView?</a> except my UIBarButtonItems are no longer clickable. My guess is that the mask is now sitting on top of the buttons breaking the interaction. </p>
  
  <p>Does anyone have any ideas to implement this without interfering with the rest of the view? </p>