Sixth Windows Test (November 29th 2018)

Added documentation
Fixed linux building (bins not included yet)
r_showtris skips 2D drawing
\status command formatting rework
Implement userinfo filtering system with fixes
Fix campaign file referencing in non-campaign modes
Add default.cfg, etconfig.cfg and autoexec.cfg file protection
Fix memory leak in cl_avi
Try to use least used client slots on new connections