"Mooz-2 Quick Tool Change System" with Shifted Holes

This is a minimal remix of "Mooz 1/2 Quick Tool Change System" used for fast change of the tools on the DOBOT Mooz-2 3D printer.

Please read first the original summary [here](https://www.thingiverse.com/thing:2831984).

I have corrected two issues:

1. Original thing orientation in STL was "standing on the heatbed" which was difficult to print. I changed it to "laying on the flat back".

2. Original position of holes for mounting screws was such that I had two problems:
* the holders