Z-axis for trapezoidal 10x2 spindle + flaged bronze nut V3

This is a new version to substitute the entire z-axis pieces to support the flanged bronze nut, that is to large to be used with the standard motor support.
So I created a new motor support that move the motor 5 mm away from the printer. I also added a new support for the end Z swith, so that the svitch can be used without the dowel.
Than there is a support for the flanged bronze nut.