Handle resizing of annotation area when drawing outside image

[DamirPorobic]

User Feedback: Currently, if I draw a shape outside the edge of the view, it automatically resizes and scrolls. However this only happens up to a certain distance, and all other drawing outside the view results in the document resizing but not auto-scrolling. If that makes sense? I think it should always auto-scroll, and there should be no limit to the size of the resulting document (or rather, a very large limit).