Report correct line number when encountering errors in Speck loading;  Correctly parse NaN values in Speck file (closes #2054)

To respect dependencies, deinitialize and destroy modules in reverse order to how they were added

Can happen if all colormap variables were set, but the file didn't exist or couldn't be loaded

 - Add the color mapping to the DU Quasar dataset  (closes #1584)
 - Add the ability to turn off a colormap
 - Add the ability to change the static color even when a colormap is present

* Some cleanup of the ImGUI code
* Reorder the panels
* Make StringPropertys work without losing value on context loss
* Add a new ImGui compoment that shows the status of the scene graph

Issue/1989

* GLFW cannot detect the buttons for the enterprise version of the
  SpaceMouse

Prevents errors from the UI

Issue/1964

Feature/jwst pointing

Move the launcher image synchronization from base -> base_blank  and move the trail actions from base_blank -> base

* added first moon, mars and mercury layers from treks

* fixing newline at eof

* updated assets for comments

OpenSpace/OpenSpace-WebGuiFrontend/#80

* Add enabled property to exoplanets and sky browser module

* Create assets for default settings and restructure assets into a components folder

* Update exoplanets data

* Set sky browser enabled to true per default and include hover circle asset

* Add name and description of hover circle, and used synced version of ring image