Cleaned up some renderer code. Removed r_mode, r_customWidth -> vid_width, etc. Fixed crash when auto-completing an empty field. Fixed USE_ICON preprocessor definition not being used in renderers
Remove r_allowResize, rename r_centerWindow to vid_centerWindow
Added fs_missing to report missing referenced files
Added cvar_modified to show modified cvars, adjusted how commands and cvars are displayed for auto-completion
Fix some renderer warnings
Adjusted fall damages to compensate for gravity increase
Removed muzzle/flash models, modified divergence beam colour
Made fs_missing CVAR_INIT
Remove some left over tier/arena code