Merge branch 'apply_strain_dependent_permeability' into 'master'

MaterialLib/SolidModels/Ehlers.cpp

MaterialLib/SolidModels/Ehlers.h

MaterialLib/SolidModels/MFront/MFront.cpp

MaterialLib/SolidModels/MFront/MFront.h

MaterialLib/SolidModels/MechanicsBase.h

ProcessLib/HydroMechanics/HydroMechanicsFEM-impl.h

ProcessLib/HydroMechanics/Tests.cmake

ProcessLib/RichardsMechanics/RichardsMechanicsFEM-impl.h

ProcessLib/RichardsMechanics/RichardsMechanicsFEM.h

...ssLib/ThermoHydroMechanics/ThermoHydroMechanicsFEM-impl.h

...ta/HydroMechanics/StrainDependentPermeability/bottomq.vtu

...ydroMechanics/StrainDependentPermeability/gas_loading.prj

...HydroMechanics/StrainDependentPermeability/injectionq.vtu

...Data/HydroMechanics/StrainDependentPermeability/leftq.vtu

.../HydroMechanics/StrainDependentPermeability/mesh_quad.vtu

...nDependentPermeability/output_curve_ts_2_t_400.000000.vtu

...ydroMechanics/StrainDependentPermeability/productionq.vtu

...ata/HydroMechanics/StrainDependentPermeability/rightq.vtu

.../Data/HydroMechanics/StrainDependentPermeability/topq.vtu

Tests/MaterialLib/MFront.cpp