Cutscene thingy

This is still in need of a few more touches (for one, the HQ screen could display a special notice during the transition).

The entire sequence as shown above is defined in xml, like so:

<hyperspace>
    <CameraMoveAction>hq</CameraMoveAction>
    <StarFieldSpeedUpAction>4</StarFieldSpeedUpAction>
    <CameraShakeAction>0.0025,3.5,false</CameraShakeAction>
    <StarFieldSpeedUpAction>0.25</StarFieldSpeedUpAction>
    <DelayAction>1</DelayAction>
    <CameraReturnAction>null</CameraReturnAction>
</hyperspace>