Tutorials should inputService.setWindowSize() for correct mouseevents

[mtsr]

The tutorials that use the mouse fail to do

m_base.getInputService().setWindowSize(m_base.getRenderingCanvas().getWidth(), m_base.getRenderingCanvas().getHeight());

Without this mouseevents will only have correct mousepositions for the first 50x50 pixels of your window, the rest will be clamped to 50.