Distorted Android

Improve the application list.

RubikCube: make the post-rotation effect 'nice'.

Many things.

1) make the Dynamic.setDuration() able to be called AFTER the Dynamic has already been run. (and rename it to 'makeRunNowFor()' )
2) remove the automatic removal of zero Effects from EffectQueues.
3) adjust several Apps to cope with 2)
4) add post-rotation to Rubik (still not finished)

RubikApp: properly compute cameraDistance and FOV.

RubikApp: minor

RubikApp: make the rotations smooth.

RubikApp: simplifications.

RubikApp: simplifications.

RubikApp: simplify SurfaceView

Improve the architecture of the Rubik App.