Patch-fix #8

- Fixed: containers in space now have a lifespan. (Previously, they disappear only if, by inertia, they flew out of the sector)
- Fixed: auto-firing turrets in docks
- Fixed: transferring to another ship during the battle is now prohibited
- Fixed: the maximum number of pirate stations per sector is now limited.
- Fixed: background flat asteroids in some sectors.
- Fixed: getting stuck in the control module at some stations. Added decorations blocking the way to the point where the ship can get stuck :)
- Fixed: loading of goods into the hold, which should not fit there.
- Fixed: some typos in station descriptions