Merge branch 'dev_mm_pf' into 'master'

NonLinearSolver/internalPoints/ipGenericCrackPhaseField.cpp

NonLinearSolver/internalPoints/ipGenericCrackPhaseField.h

NonLinearSolver/materialLaw/mlawGenericCrackPhaseField.cpp

NonLinearSolver/materialLaw/mlawGenericCrackPhaseField.h

dG3D/benchmarks/CrackPhaseField/pf.py

dG3D/benchmarks/CrackPhaseField1D_da/Sample.geo

dG3D/benchmarks/CrackPhaseField1D_da/Sample.msh

dG3D/benchmarks/CrackPhaseField1D_da/damage.py

dG3D/benchmarks/CrackPhaseField1D_noda/Sample.geo

dG3D/benchmarks/CrackPhaseField1D_noda/Sample.msh

dG3D/benchmarks/CrackPhaseField1D_noda/nodamage.py

dG3D/benchmarks/CrackPhaseField3D/SEN.geo

dG3D/benchmarks/CrackPhaseField3D/SEN.msh

dG3D/benchmarks/CrackPhaseField3D/SEN3.geo

dG3D/benchmarks/CrackPhaseField3D/SEN3.msh

dG3D/benchmarks/CrackPhaseField3D/pf.py

dG3D/src/nonLocalDamageDG3DIPVariable.cpp

dG3D/src/nonLocalDamageDG3DIPVariable.h