Collection of a number of changes (#2286)

* Cleanup Property code
* Remove NOLINT statements
* Return Property class types as string_view
* Remove getStringValue function
* Simplify string value retrieval
* Ensure that image paths in the ImageSequenceTileProvider are sorted (closes #2205)
* Some cleanup of OpenSpaceEngine
* Cleanup documentation
* Some more cleanup of engine classes
* Some more cleanup
* Update SGCT repository
* Use new Jenkins node identifiers as the old method broke with update

modules/base/rendering/screenspaceframebuffer.cpp

@@ -83,7 +83,7 @@ ScreenSpaceFramebuffer::ScreenSpaceFramebuffer(const ghoul::Dictionary& dictiona
     _size.set(glm::vec4(0.f, 0.f, resolution.x, resolution.y));
 }
 
-ScreenSpaceFramebuffer::~ScreenSpaceFramebuffer() {} // NOLINT
+ScreenSpaceFramebuffer::~ScreenSpaceFramebuffer() {}
 
 bool ScreenSpaceFramebuffer::initializeGL() {
     ScreenSpaceRenderable::initializeGL();