repair various things to make fit scripts work with fit_monitor module

...les/Python/fit54_ExternalMinimizer/lmfit_with_plotting.py

Examples/Python/fit55_SpecularIntro/FitSpecularBasics.py

Examples/Python/fit55_SpecularIntro/FitWithUncertainties.py

Wrap/Python/__init__.py.in

Wrap/Python/fit_monitor.py

Wrap/Swig/libBornAgainCore.i

auto/Wrap/libBornAgainCore.py

cmake/BornAgain/PythonAPI.cmake