Set default gamma to 1.0
IncrementSequenceNumber to protected method
AttenuationFactor is used to determine the powe of one Point and Spot lights
Removes unused OpitX context variables
Puts several project variables to default
Several changes to randomize lights and determine radiance
Output doesn't average from iteration anymore
Disallow whole program optimization
Simplify RenderManager due to unused variables (e.g iterationNumber, PPMradius)
Adds uncessfulbuild to gitignore