update of key names in teststand.json and correction in modules where keys are needed

Python_script/MeasurementPlot.py

Python_script/PostPlot.py

.../PostPlots/2023_07_29-15_38_40_results_25.0deg_55.0rh.pdf

.../PostPlots/2023_07_29-15_38_40_results_30.0deg_55.0rh.pdf

Python_script/TestData_JBY240/PostPlots/Full_Transistion.pdf

Python_script/almemo710.py

Python_script/curvefit_and_correlation.py

Python_script/play_with_almemo710.py

Python_script/prototype.py

Python_script/test_stand_parameter.json

Python_script/the.pdf