Model Update

 The model was edited and some features were added. HUD has a new design and there are buttons for hidding HUD and interactive help. Lcd monitor has more channels and when clicked on monitor channel is changed. Vaccuum vessel (chamber) is accessible inside when clicked on. There is also a new animated viewpoint which leads the user from tokamak room to power control room. The functionality still needs to be polished but it has now more or less final structure.