Patch 44 complete: Tech labs and better mission balancing.

# 6.1. ## 44
Added a "tech lab" to the game.
Energy is now transmitted between ship parts connected by the energy chain.
Rewrote and improved the map generation process.
The sector tooltips now tell you whether you will find a shop in a sector.
Sectors with goodies (shops, rich asteroids etc.) will now tend to spawn more difficult enemies.
Removed some old ships from the ship library (should improve startup speed).
Asteroids containing ore are now displayed in green on the minimap.