Improve the 3D manipulator gizmo
Created by: Calinou
Its size now takes into account the editor scale and the viewport's half resolution setting. It is now also more detailed — notice the more cone-like shape of the arrows and the smoother curve of the rotation gizmo.
It will not become smaller at editor scales below 100% (otherwise, it would be difficult to use).
Preview (editor scale set to 200%):