Improvements for Geeetech G2S

Parts to improve the print accuracy and quality of Geeetech G2S delta printers. For detailed description see the following web site:
[Bechele.de - english] (https://bechele.de/?page_id=496)
Updated 03.Feb.2018:
Because I noticed that I could not tigthen all three screws for the lower bearing holder because of mechanical inacurracy that caused hard going bearings, I modified the lower bearing mounting using thread bolts. The thread bolts allow to adjust the parallelity of the upper and lower