* Add settings to Renderable to control whether the renderbin is updated based on Opacity
* Remove duplicate RenderBin specification for RenderableSphere
* Remove unnecessary RenderBin specifications of Lagrange points
* Don't automatically update the renderbin for RenderableLabel and RenderablePlane
* Remove extra `setRenderBinFromOpacity` from RenderableSpheres
* Move information about whether a renderable should be updated when disabled
* Some cleanup of Renderable class
* Don't update the renderbin automatically if the user specified the renderbin manually