flatter directory strucure for Python examples

Examples/Python/sim11_Device/AxesInDifferentUnits.py

Examples/Python/sim11_Device/BeamDivergence.py

Examples/Python/sim11_Device/ConstantBackground.py

Examples/Python/sim11_Device/DetectorResolutionFunction.py

Examples/Python/sim11_Device/OffSpecularSimulation.py

Examples/Python/sim11_Device/RectangularDetector.py

Examples/Python/sim11_Device/ResonatorOffSpecSetup.py

...Python/sim21_Reflectometry/BasicPolarizedReflectometry.py

...les/Python/sim21_Reflectometry/BasicSpecularSimulation.py

Examples/Python/sim21_Reflectometry/BeamAngularDivergence.py

Examples/Python/sim21_Reflectometry/BeamFullDivergence.py

Examples/Python/sim21_Reflectometry/FootprintCorrection.py

Examples/Python/sim21_Reflectometry/MaterialProfile.py

...ython/sim21_Reflectometry/MaterialProfileWithParticles.py

Examples/Python/sim21_Reflectometry/PolarizedNoAnalyzer.py

...m21_Reflectometry/PolarizedNonperfectAnalyzerPolarizer.py

...ples/Python/sim21_Reflectometry/PolarizedSpinAsymmetry.py

...s/Python/sim21_Reflectometry/PolarizedSpinAsymmetryFit.py

Examples/Python/sim21_Reflectometry/PolarizedSpinFlip.py

Examples/Python/sim21_Reflectometry/RoughnessModel.py