use QVector::fromStdVector instead of our own fct; rename Utils files

App/AppOptions.cpp

App/main.cpp

GUI/Models/Fit/MinimizerItemCatalog.cpp

GUI/Models/Instrument/InstrumentItems.cpp

GUI/Models/Job/JobModel.cpp

GUI/Models/Job/JobModelFunctions.cpp

GUI/Models/Job/JobQueueData.cpp

GUI/Models/Material/MaterialItem.cpp

GUI/Models/Material/MaterialItemContainer.cpp

GUI/Models/Material/MaterialModel.cpp

GUI/Models/Project/ProjectDocument.cpp

GUI/Models/Session/SessionModel.cpp

GUI/Utils/ItemFileNameUtils.cpp

GUI/Utils/Path.cpp

GUI/Utils/Path.h

GUI/Utils/String.cpp

GUI/Utils/String.h

GUI/Views/FitWidgets/FitObjectiveBuilder.cpp

GUI/Views/FitWidgets/FitSessionController.cpp

GUI/Views/Main/AboutDialog.cpp