Added FlyCamera (thanks to James Baicoianu). Added specular map to normal map shader. Added WebGL Earth FlyCamera demo.

Changed normal map shader to multiply specular component with diffuse weighting as specular highlights were appearing in the dark parts.

Changed camera look speed in minecraft and terrain demos, they were too fast - I guess as everything got faster with antialiasing off.

Reenabled antialiasing in few demos where it was too ugly without (basically anything with lines and without postprocessing).

Fixed again spurious invisible characters in empaempa's code (which are breaking everything and are hard to hunt as they look like spaces).