Drag in scrollable area issue

[1ton]

Case for this example:

https://github.com/clientside/amplesdk-tests/blob/master/manual/misc/reorder/reorder.html

Take the first item of the left container. Drag it to the bottom of the container. Wait till the browser starts autoscroll. When autoscroll stops, you'll see that item moved down (changed it's position, but we did not move it).

Tested in Chrome and FF on sources of Ample SDK.

Note that the it'd be good to get it worked when the dragged item positioned not directly inside the scrollable container as in example.