v0.0.0.128 - Balancing, bug fixes

Just a little update, with some minor fixes and balancing:-

• Solar panels now take less background damage from space dust. Was actually a bug here, range was 1-0.3 rather than 0-0.3 ooops!
• Structural tile gfx are now removed if not connecting built tiles. This tidys up the build apperance somewhat, but still keeps parts of the station connected if tiles removed.
• Balancing of structure health. Have decreased hp on doors, airlocks, floors. Increase solar panels (slightly).
• Fix: Mining laser was missing it's turret gfx!
• Fix: Could delete an item, during building.

Currently working on:-

• Cancel build items (as long as a droid hasnt started building)
• Scenarios - Looking to add in first basic mission.
• Station start placement. When you start a scenario, i think it gives some interest in where to place your station. You can deceide to place closer to asteroid belt, for quicker turn around, but then it's more risky. 
• With start placement this also gives the possibility of positioning near large asteroids. Mining lasers should be able to mine these!

Cheers

Nick