Updated Rymdhulken with new stuff!

Rymdhulken is updated with several bugfixes and improvements:

• Tapping a squaddie and telling them to wait is improved.
• Removed overwatch options. Squaddies are automatically on overwatch if they're waiting.
• Room generation is (quite) improved with more snakey corridors.
• Some "juice" added.

Good luck and stay frosty!