Code cleaning. Sugiyama tweak.
Merge remote-tracking branch 'origin/master'

Conflicts:
	hu.bme.mit.emf.incquery.visualization/.classpath
	hu.bme.mit.emf.incquery.visualization/.project
	hu.bme.mit.emf.incquery.visualization/META-INF/MANIFEST.MF
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/callgraph/CallGraphDoubleClickListener.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/callgraph/CallGraphLabelProvider.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/callgraph/CallGraphModel.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/callgraph/CallGraphViewContentProvider.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphDoubleClickListener.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphLabelProvider.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphLayoutAlgorithm.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphModel.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphModelContentProvider.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/contentgraph/ContentGraphViewContentProvider.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/model/AggregatedConnection.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/model/CheckElement.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/model/PathConnection.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/model/PatternElement.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/model/VariableElement.java
	hu.bme.mit.emf.incquery.visualization/src/hu/bme/mit/emf/incquery/visualization/view/GraphView.java