Derivative Version 2 of "ANet A6 E3D Titan + V6 Carriage" and other things

This is a much improved version of https://www.thingiverse.com/thing:3365786 :
- The blower does not hit de commanda button
- The design is simpler, has less parts and is more compact (*X_PROBE_OFFSET* is 35 and *Y_PROBE_OFFSET* is just -15).
- Two decent part blowers are inclded (the E3D version for E#D nozzles, the LONG version for longer nozzles - 6mm longer)

I'be been searching the Thingiverse for a functional carriage for a E3D Titan extruder with a V6 hot-end in an direct drive conf