Merge remote-tracking branch 'origin/master' into 4279

.../src/org/fortiss/tooling/common/ui/javafx/lwfxef/.ratings

...ooling/common/ui/javafx/lwfxef/DiagramViewerFeatures.java

.../tooling/common/ui/javafx/lwfxef/controller/base/.ratings

...vafx/lwfxef/controller/base/DefaultDiagramController.java

...rg/fortiss/tooling/ext/variability/ui/properties/.ratings

...variability/ui/properties/FeaturePropertySectionBase.java

...ss.variability/src/org/fortiss/variability/model/.ratings

.../org/fortiss/variability/model/VariabilityStaticImpl.java