Added popover for longpressedview

I'm not sure if these lines of code is correct; nonetheless, I have a nice popover when you long press on the pictures from the iPad. 
```
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
  self.cameraPopover = [[UIPopoverController alloc] init];
  if (isPhone) {
    [self dismissViewControllerAnimated:YES completion:nil];
  } else {
    [self.cameraPopover dismissPopoverAnimated:YES];
    self.cameraPopover.popoverLayoutMargins = UIEdgeInsetsMake(0, 0, 0, 0);
    self.cameraPopover = nil;
  }
```