tracker → common Relation

File in src/utils/gui/tracker	Includes file in src/utils/common
GUIParameterTracker.cpp	StringUtils.h
GUIParameterTracker.cpp	SUMOTime.h
GUIParameterTracker.cpp	ToString.h
TrackerValueDesc.cpp	RGBColor.h
TrackerValueDesc.h	RGBColor.h
TrackerValueDesc.h	SUMOTime.h
TrackerValueDesc.h	ValueRetriever.h