Merge branch '4310' into 'master'

...ooling/ext/quality/ui/view/fx/ModelQualityFXViewPart.java

org.fortiss.tooling.ext.quality/.classpath

org.fortiss.tooling.ext.quality/.project

org.fortiss.tooling.ext.quality/.settings

org.fortiss.tooling.ext.quality/META-INF/MANIFEST.MF

org.fortiss.tooling.ext.quality/build.properties

org.fortiss.tooling.ext.quality/html/developer/.ratings

...iss.tooling.ext.quality/html/developer/documentation.html

org.fortiss.tooling.ext.quality/plugin.properties

org.fortiss.tooling.ext.quality/plugin.xml

....ext.quality/src/org/fortiss/tooling/ext/quality/.ratings

...org/fortiss/tooling/ext/quality/GraphMetricsProvider.java

.../tooling/ext/quality/HierarchicElementMetricProvider.java

.../src/org/fortiss/tooling/ext/quality/IMetricProvider.java

...rg/fortiss/tooling/ext/quality/IMetricUpdateListener.java

...rg/fortiss/tooling/ext/quality/ModelQualityActivator.java

...quality/src/org/fortiss/tooling/ext/quality/data/.ratings

...org/fortiss/tooling/ext/quality/data/DataRootElement.java

.../src/org/fortiss/tooling/ext/quality/data/MetricData.java

...y/src/org/fortiss/tooling/ext/quality/data/MetricKey.java