Switching between 2D and 3d geo enabled

src/MainWindow.cpp

src/SaxParser.cpp

src/ThreadVisualisation.cpp

src/ThreadVisualisation.h

src/TimerCallback.cpp

src/TimerCallback.h

src/extern_var.h

src/geometry/FacilityGeometry.cpp

src/geometry/FacilityGeometry.h

src/geometry/LinePlotter2D.cpp