Shift pasted model elements by an offset
When inserting copies of objects as a result of a copy&paste operation, the inserted model elements should be shifted by an offset. This gives visual feedback to the user that the paste operation has actually been performed.
Note that the shift must only be applied to model elements, since connectors are layouted relative to their containing model element.
(from redmine: issue id 2344, created on 2015-06-03, closed on 2015-06-08)