Redesign Object and Point Handles

[pasbi]

Currently, there are 8 handles (bounding box, particle, vertical/horizontal move, vertical/horizontal scale, rotate, and isotropic scale).

• All these handles clutter the view. It's difficult to see the objects one is working with.
• The default circle and the rotation handle align perfectly if the view is at a 1:1 scale. That adds clutter and confusion.
• The handles pointing left/up from the center control scaling. Intuitively, one would probably expect translation.
• Is scaling with handles required at all? It can still be controlled via the property manager or the bounding box handle.

Not sure how to improve this. Appreciate suggestions.