Printrbot Simple, Cable Management remix

Remix from iamjonlawrence's design. I changed the Y axis motor on my Printrbot Simple Maker 1401 so I needed more clearance on the mount.

Also, the chains were hard to print and assemble due to thermal issue. I enlarged the chain holes and added some kind of a cracker that helps the part to stick on the print surface. If you got the same issues, there you go!