[TIMOB-2785] iOS: Kitchen Sink 1.5.1 BUG for scrollable view

Try this on kitchen Sink and Mobile SDK 1.5.1:

1) Go to Base UI - Views - Scrollable view
2) pinch the view zoomin in a little
3) change orientation
4) pinch zooming out trying to reset scale to 1.0

The view moves partially out of screen centering its lower right corner in the main window instead of its natural center point.

This leads to terrible results if you try to use Scrollable Views building a professional app. I found no way to control such weird behavior.

If you work on the scrollable view class trying to fix the above, please consider to add some code to set/get the scale of the inner scroll view of the scrollable and the possibility to have event listener for the scale event.

Thanks.