Remove wallpaper_radius command
Remove setwallpaper and removewallpaper commands in the ent command
Added add_wallpaper_radius, will add wallpaper to any walls in the radius if they don't have a wallpaper, uses the provided skin id (name or id)
Added change_wallpaper_radius, will modify any wallappers in the radius to the provided wallpaper
Both of the above convars can now take -1 as a skin id and a random wallpaper will be used
Added clear_wallpaper_radius, will remove any wallpapers in the given radius