JS3D: flip Travelling2D model to have it face the right direction
JS3D: flip Travelling2D model to have it face the right direction

Stacker2D and Reclaimer2d both have their loading end at the 'bottom' while the
travelling2D put its at the 'top'.  Flip it so that the track orientation code
makes it face in the correct direction.

Signed-off-by: Harvey Harrison <eadbd6b462bf3c97df0300a934c12bc2e5d1fe51@ausencosandwell.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim