* Rename OnScreenGui module to ImGui
* Support multiple external module folders (closes#31)
* Cleaning up CMake files
* Restructure application specification
* Add parameter for library mode to all modules
* Add functions to handle global variable state
* Misc/remove warnings (#383)
* Increase build timeout and do a clean rebuild every commit
* Perform Oren Nayar diffuse shading on globes.
* Remove unused propertyowner
* Enable accurate normals for globes
* Use property for accurate normals.
* Correctly calculate height when scale is changed.
* Auto update line endings to LF in main.cpp and openspaceengine.cpp
* Clean up and comment
* Convert shader indentation to spaces (Wooooops..).
* Line endings
* Line endings and small fixes
* Line endings
* Clean up
