Merge pull request #2989 from wenqing/permeablility_stress

...eIndexModel/c_PermeabilityMohrCoulombFailureIndexModel.md

...ty/PermeabilityMohrCoulombFailureIndexModel/t_cohesion.md

...meabilityMohrCoulombFailureIndexModel/t_fitting_factor.md

...meabilityMohrCoulombFailureIndexModel/t_friction_angle.md

...ityMohrCoulombFailureIndexModel/t_initial_permeability.md

...ityMohrCoulombFailureIndexModel/t_maximum_permeability.md

...yMohrCoulombFailureIndexModel/t_reference_permeability.md

...rCoulombFailureIndexModel/t_tensile_strength_parameter.md

Documentation/bibliography/other.bib

MaterialLib/MPL/CreateProperty.cpp

...erties/CreatePermeabilityMohrCoulombFailureIndexModel.cpp

...operties/CreatePermeabilityMohrCoulombFailureIndexModel.h

MaterialLib/MPL/Properties/CreateProperties.h

...L/Properties/PermeabilityMohrCoulombFailureIndexModel.cpp

...MPL/Properties/PermeabilityMohrCoulombFailureIndexModel.h

...alLib/TestMPLPermeabilityMohrCoulombFailureIndexModel.cpp