Fixing docking empty scale and position

Hopefully fixes #2923
I've reseted the scaling and positions of the docking empties. 

The odd thing is that the new file exported from blender weights only 10k compared to the original 344k. The original one had a long array of number pairs associated with that dummy triangle.

It works on my end, but I'm on windows and it seems that some linux distros had this error only (if I understood it correctly), so please test.

Also I had to rotate the whole thing -90 on X to be aligned with the rest of the station. (#2951). But the original wasn't rotated, and it worked for me that way anyway. Might this be an exporter issue? I'v just imported the .dae to Blender, fixed the things and exported.