* 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
* RenderabeDUMeshes (And reimplement reading of vertex info from speck, to make it easier to compute sphere. The plan is to phase out this renderable anyways)
* RenderablePoints
* Grids: RenderableGrid, RenderableBoxGrid, RenderableRadialGrid & RenderableSphericalGrid
* RenderableGalaxy
* Remove Logarithmic ViewOption and instead always use exponent of NumericalProperty + set exponent of some renderables' properties
* Add MinMaxRange ViewOption for Vec2 properties
* Add MinMaxRange viewoption to some existing vec2 properties and combine some other related properties to be able to utilize it. For example Min and Max label sizes, fade in/out distances, inner and outer radius. OBS! Includes renaming several properties (**breaking change**)
* Refactor and document labels code. OBS! Includes renaming several properties (**breaking change**)
* Add comments for some assets that have labels that are not working correctly
Renderables with rename properties: RenderableLabels , GlobeLabelsComponent, RenderableBillboardsCloud, RenderableDUMeshes, RenderableRadialGrid )
* Some cleanup of the galaxy renderer
* Remove translation from renderablegalaxy
* Apply additive blending when compositing downsampled volume; Use star distance as alpha for transparency (closes#1208)
* Adapting to introduction of new Dictionary class in Ghoul
* Mainly replacing usage of float instead of doubles as expected
* Adjust to the lack of the hasKeyAndValue function
* Cleaner handling of global state
* Prevent Lua memory corruption (closes#982)
* Initialize glfw first thing to prevent weird joystick loading bug during startup
