split GUI/View/Fit into 4 directories

GUI/View/Fit/FitActivityPanel.cpp

GUI/View/Fit/FitSessionController.cpp

GUI/View/Fit/FitSessionWidget.cpp

GUI/View/Fit/JobRealTimeWidget.cpp

GUI/View/FitControl/FitWorker.cpp

GUI/View/FitControl/FitWorker.h

GUI/View/FitControl/FitWorkerLauncher.cpp

GUI/View/FitControl/FitWorkerLauncher.h

GUI/View/FitControl/MinimizerSettingsWidget.cpp

GUI/View/FitControl/MinimizerSettingsWidget.h

GUI/View/FitControl/RunFitControlWidget.cpp

GUI/View/FitControl/RunFitControlWidget.h

GUI/View/FitDisplay/FitLog.cpp

GUI/View/FitDisplay/FitLog.h

GUI/View/FitDisplay/FitProgressInfo.cpp

GUI/View/FitDisplay/FitProgressInfo.h

GUI/View/FitDisplay/GUIFitObserver.cpp

GUI/View/FitDisplay/GUIFitObserver.h

GUI/View/FitDisplay/JobMessagePanel.cpp

GUI/View/FitDisplay/JobMessagePanel.h