Unify Delete/Backspace behaviour in gizmos with the rest of slicer. Also, backspace on macOS in SLA gizmo now deletes points and not the whole object, which was quite unexpected.
Unify Delete/Backspace behaviour in gizmos with the rest of slicer. Also,
backspace on macOS in SLA gizmo now deletes points and not the whole object,
which was quite unexpected.

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r