Higher version of all in one case

This is my remix of Michael's 'TeachingTech' case. I also used jameswoodward's remix as input.

What I changed:

• raised the hight of both boxes by 12 mm as I use the rubber feet (https://www.thingiverse.com/thing:3020865) for my ender and so have more room under the printer.

MKS box:

• reduced the size of the hole for the USB plug
• closed the SD card slot
• added more air slots
• added a holder in the MKS box for a 40 mm fan

MKS box lid:

• added an additional slot for cables and some air slots

Update 2019-10-14:
Now there is also a higher version of the box for the standard Melzi board or the SKR Mini E3. It also has the cable chain mount and 3 holders for fans. Unneeded holders might be cut off / broken off if they are in the way.