Fix: steer in straight paths.

Major update:
+ Gamepad
+ Gyroscope
+/- Changed some armour blocks
+/- More grip, power and unlimited speed

Major update:
+/- Battery -> hydrogen engine with high autonomy.
+/- Incomplete ejector -> scripted rotor as steering wheel.
+/- Small reactors -> connector for refuel.
+ Projector for quick repair.
+ Small battery only to help to reach a refuel station when out of fuel. It has no other use.
- Gyroscope.