Bigger light extend wrt energy.

data/shaders/pointlight.vert

@@ -16,7 +16,7 @@ const float zNear = 1.;
 void main(void)
 {
     // Beyond that value, light is too attenuated
-    float r = 50 * Energy;
+    float r = 500 * Energy;
     center = Position;
     energy = Energy;
     vec4 Center = ViewMatrix * vec4(Position, 1.);