Node simplified

- Pie Slice is broken again

+ removed local + world rotation. Rotation Pivot is now the centre of
the cylinder and it works really well
+ length clipping has been offset to the half mark of the cylinder. This
way there is a best of both world where the rotation works well and the
length is easy to set
+ a small offset to the length slider has been applied to always show
the cap.
+ moved position preview up in the interface
+renamed some interface items