SpacePort - Tradestation Beta 3.1

- Removed misplaced shields/blocks
- Changed fully stocked shop to normal stocked shop
- Minor adjustments

I've made some minor changes to the exterior, added new shield. Interior should be much more interesting than before, with about 4 times more interior to explore!
Some stuff has been changed, to make sure it will work good in game as default station!

Changes:
- fixed random blocks missing
- exits now have plexbeacon-shields instead of orange light.
- added more blue to the station (details)
- improved maindock with a more high-tech interior