Updating ship tags

Added camera and weapon tags for these:
Amphiesma
Mola Mola (deleted an unused model too, I don't remember adding that...)
Natrix
Pumpkinseed (also fixed some orientation problems on the model)
Wave

I didn't touched the Venturestar to @Zordey, I bet these are already on his working copy anyway.
I also didn't added them to the Lunar Shuttle, since it's already under remodeling.

Weapon positions aren't represented on model or texture, they are temporary.