- Removed hacky DOFModeHack fix, Rubat fixed the issue!!!

No more invisible NPCs, and proper working shadows for them from lamps

- Added preset support

- Added a hack fix for invisible NPCs, using the same hack DOF uses.

Unfortunately this means broken flashlight shadows for NPCs and maybe just overall when any of the depth effects are enabled.
Nothing I can do about it, pester Rubat to fix it properly.

- Added Blur shader
- Added Depth Blur 2 (Better than the first one, but still limited quality-wise due to Shader Model 2 limitations)

- Added proper icons for VHS1 and Videoglitch
- Optimized some icons' filesizes
- Added way to quickly make accurate spawnmenu icons for the shaders

- Added Video Glitch effect

- Added a simplistic VHS shader

- Add render lib functions for chromatic aberration, film grain and fisheye

- Added Radial Blur

- Added chromatic aberration