Remove all manual specification of caching and offline mode from manual wms servers

Web GUI from Klas Eskilson (three new modules: webgui, webbrowser and cefwebgui)
Parallel connection refactorization
Wormhole server added to the main repository
Transfer function editor work from Cristoffer Särevall
Update ghoul

 * Add ability to have current date in file name path
 * Remove SGCT_ prefix for screenshots (closes #449)

Add spherical mirror configuration file
Add the Spout output configration file

Add files to gitignore file

Update SGCT reference
Update Ghoul reference
Prevent spherical grid to recreate grid each frame
Add version and commit information (closes #395)

Remove keybinding scripts
Remove satellites

Started work on fixing Rosetta

Remove dedicated logs folder
Change openspaceengine to create logs folder automatically

Fix various issues in mod files
Remove backslash from file paths in StringProperty

Add jup260 torrent download to the Jupiter system

Remove unused "Reference" specification from mod files
Add osirisrex files to gitgnore
Make Ephemeris values into properties

Enable this feature on default in openspace.cfg
Move all generated documentations into a documentation folder
Adapt gitignore accordingly

Ability for LuaDocumentationFile, PropertyDocumentationFile, and KeyboardMapping to write HTML output
Adding those html files to the gitignore

Removed old kernel torrent files
Cleaned .gitignore

Update gitignore file

Enable ability to apply a rotation matrix to the rotation vector to accomodate for model misalignments