Number of fit iterations propagated from domain to FitControlWidget

...ex02_FitCylindersAndPrisms/FitCylindersPrisms_detailed.py

GUI/coregui/Models/FitParameterModel.cpp

GUI/coregui/Models/FitSuiteItem.cpp

GUI/coregui/Models/FitSuiteItem.h

GUI/coregui/Models/JobItem.cpp

GUI/coregui/Models/JobItem.h

GUI/coregui/Views/FitWidgets/FitActivityPanel.cpp

GUI/coregui/Views/FitWidgets/FitParametersWidget.cpp

GUI/coregui/Views/FitWidgets/FitSuiteWidget.cpp

GUI/coregui/Views/FitWidgets/FitSuiteWidget.h

GUI/coregui/Views/FitWidgets/GUIFitObserver.cpp

GUI/coregui/Views/FitWidgets/RunFitControlWidget.cpp

GUI/coregui/Views/FitWidgets/RunFitControlWidget.h