Fixed Bugs:
 - There was a bug in Node class that caused incorrect object transformations
   since revision: ccad5f3622afbe6f6bc5ed5d2393560c756b3b30 (the Fog commit)

Real-Time Editing
 - Now the Fog level can be changed via the mouse wheel
 - added feature to the CameraController class that inclines the camera around the    'Z' axis in the range -15 to 15 degrees