r_lighting toggles lights, material rename

Source/Game/Console/EngineSubsystem.cs

@@ -218,6 +218,10 @@ namespace Game
                     boolValue = valueFloat != 0f;
 
                 globals.SetValue("Scene Lighting", boolValue);
+
+                Light[] lights = Level.GetActors<Light>();
+                foreach (Light light in lights)
+                    light.IsActive = boolValue;
             }
         }