Added red-effect to heat radiators
Increased glow texture red component
Enable the effects only for radiator*
Large and Radial are also colored based on the temperature
All radiator support emissive and bump maps
Fixed emissive of large, normal  and inline radiators

Inline and large red color is now bright as the other radiators and the
normal radiator color follows the same scale as the others.
Removed forgotten unused variable
Added configuration and fixed texture/colors

Colors are now even between components.
The texture colors are applied with a 0.0f-1.0f interval at the power of
3 to make the glow effect increase exponentially as the temperature
rises.
Added a configuration key to disable the feature completly.
Merge pull request #10 from mellon85/development

Red hot radiators