* Split RenderableSphere class into a local and an online sphere
* Make the video sphere derive from the regular sphere
* Make RenderableTimeVaryingSphere derive from RenderableSphere
* Some clean up
* Add general functions for renderable matrix calculations
* Make RenderableSphere and Plane use them
* Fix an issue with the RenderablePlane shader
* Make one function that returns all three types of render matrices
* Make more Renderables use the general matric calculation function
* Make more Renderable use the general matrix function
* Simplify alternative transforms for matrix calculations
* Small clean-up
* Update RenderableModel (again) to use new transform functions
* Make calc all matrix function to return tuple
* Update some more places
* 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
