Merge branch 'restruct_dirs' into 'develop'

Doc/dev-notes/modify-formfactor.md

GUI/CMakeLists.txt

GUI/DataLoaders/AbstractDataLoader.cpp

GUI/DataLoaders/AbstractDataLoader.h

GUI/DataLoaders/AbstractDataLoader1D.h

GUI/DataLoaders/AbstractDataLoaderResultModel.cpp

GUI/DataLoaders/AbstractDataLoaderResultModel.h

GUI/DataLoaders/AutomaticDataLoader1D.cpp

GUI/DataLoaders/AutomaticDataLoader1D.h

GUI/DataLoaders/AutomaticDataLoader1DResultModel.cpp

GUI/DataLoaders/AutomaticDataLoader1DResultModel.h

GUI/DataLoaders/DataLoaders1D.cpp

GUI/DataLoaders/DataLoaders1D.h

GUI/DataLoaders/QREDataLoader.cpp

GUI/DataLoaders/QREDataLoader.h

GUI/DataLoaders/QREDataLoaderProperties.cpp

GUI/DataLoaders/QREDataLoaderProperties.h

GUI/DataLoaders/QREDataLoaderProperties.ui

GUI/DataLoaders/QREDataLoaderResultModel.cpp

GUI/DataLoaders/QREDataLoaderResultModel.h