Changeset 10752 for branches/HeuristicLab.EvolutionTracking/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Tracking/SymbolicDataAnalysisExpressionTracing.cs

#1772: Refactored subtree tracing functionality and moved it from the view into a separate static class. Shortened symbol names in the FragmentGraphView so that trees are displayed more nicely.