Have added a station builder mode. Just a freeplay mode where you can design you space station with unlimited funds and no dangers or objectives. Can load/save these with the idea that you'll be able to load these station into certain scenarios/sandbox.

• Station builder added (with load/save).
  
• Droid count added to droid UI.
  
• Fix: Droid follow make consistent distance under droid UI.
  
• Fix: Allow robot/item selection if tutorial/trade board showing.
  
• Fix: Audio positioning on load.
  
• Fix: Door/Airlock replacement with Floor/Wall cost calculation.
  
• Fix: RemoveUnconnectedStructs not checking floor tilemap.
  

Demo also updated.
Nick