Fix mesh normals

[rougier]

Both baby GNU and Tux normals need some fix.

[Sakrecoer]

I looked into this, and the normals look fine in blender. However, i noticed that many objects in baby-tux haven't got their location and rotation applied. I fixed it in the animated models, but I am afraid I don't have sufficient experience with the requirements for 3D-printing to dig into the files intended for that purpose...

(To apply loc/rot/scale in blender, select object in object mode => Ctrl+A)

[rougier]

Thanks. I think I've used MeshLab to produce the .stl file but I don't remember how I fixed the mesh...