Prusa i3 Rework - Y-motor Reverse edition

Motor moved to the back instead of inside the Y-assembly.
Increases Y freedom by approx. 44mm.

The Y-idler Reverse edition adds approx. another 35mm.
http://www.thingiverse.com/thing:646518

Note:
In case you haven't noticed. The top M10 threaded rod can't hold the Y-motor mount using M10 nuts because of the GT2 belt. This wil make the mount wobble. But is easily fixed by using a cable tie around the motor, going around the top M10 threaded rod. If you notice bending because of pr