- add GLSL postprocessing shader to world view and have it replicate the old gamma ramp
- clear framebuffer between frames to fix visual bugs outside map
- remove old gamma ramp code (was disabled) and remove gamma adjustments to hud elements as they're now unaffected by the shader
- additional visual preset config updates
o Implemented teammate orders/query icons
Mantis 0000992:
o Implemented teammate order popups
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@50 67975925-1194-0748-b3d5-c16f83f1a3a1