I3 Mk2/MK2s Extruder Idler with Push fitting Support for filament guide

My version of the Prusa i3 MK2/MK2s extruder idler with support for a push fitting.

I also changed it the way that you can remove the old idler from the extruder, put the screw back in place, so you can change the idler again without pulling everything apart again.

I also added a modified version of the original Scad file from Prusa, I did not print it, so I'm not sure if this works with the push fitting.