(Reach) Fix Platform Kinematics
Created by: jhaazpr
Platform axes need to be explicitly specified in the block. In the kinematic tree, make it so that if a platform would normally move on the axis, it moves opposite. E.g. Ultimaker going "up" means the platform moves "down"—currently it goes up. Also the material marks need to get translated with it. I think for the prusa right now something is hardcoded—this needs to be examined and fixed.