Borgs and ProDoc-Healthgoggles upgrade

[Zamujasa]

This upgrade is invisible and can't be fabricated. If you accidentally eject it from the docking station a human has to fix it because borgs can't pick up/drag invisible things.

[Convair880]

This is still a problem. The health scanner is available from the fabricators now, but it still doesn't have a sprite. I assume this will also affect the quick-access panel of the new cyborg HUD.