added logic to paint thrusteregnision when trusters are active. The code is not active do to it slowing down the model considerably.
added methodes in Spaceship to return whether the indiviual thrusters are active.
added methodes in ThrusterComponent to return whether the indiviual thrusters are active.
Added getter for variable Active in Thruster.
Merge branch 'master' of https://github.com/Kuxe/oopprojekt