Improve Hit Test Coordinate Conversion

[DaveBatton]

Tapping the Move and Delete buttons in my table view cell didn't trigger any actions. I was able to trace it down to incorrect conversion of the cell's rect in the -overlayView:didHitTest:withEvent: delegate method. So I changed this:

CGRect rect = [self.view convertRect:self.cellDisplayingMenuOptions.frame toView:self.view];

To this:

CGRect rect = [self.cellDisplayingMenuOptions.superview convertRect:self.cellDisplayingMenuOptions.frame toView:self.view];

I realize it's just a delegate method and it may need to be different for each app, but this might be a more likely-to-work solution than assuming the cell's superview shares the same frame as the view controller's view.