Merge branch 'master' into ujwal3

NonLinearSolver/contact/contactTerms.cpp

NonLinearSolver/modelReduction/Optimizer.h

.../modelReduction/TrainingArbitraryDeepMaterialNetworks.cpp

...er/modelReduction/TrainingArbitraryDeepMaterialNetworks.h

...earSolver/modelReduction/TrainingDeepMaterialNetworks.cpp

...inearSolver/modelReduction/TrainingDeepMaterialNetworks.h

.../modelReduction/TrainingDeepMaterialNetworksNonLinear.cpp

...er/modelReduction/TrainingDeepMaterialNetworksNonLinear.h

NonLinearSolver/nlmechsolpy.i

...s/GursonPlasticInstabilities_PathFollowing/Plane_notch.py

...nThomasonMultipleNonlocalVar_PathFollowing/Plane_notch.py

.../benchmarks/GursonThomason_cube_I1J2J3_Transition/cube.py

dG3D/benchmarks/GursonThomason_cube_Transition/cube.py

dG3D/benchmarks/GursonThomason_cube_withLodeEnhanced/cube.py

dG3D/benchmarks/Inno_EMT_test/InnoElecMagTherm.py

dG3D/benchmarks/defoDefoContactSlaveEdge2DQuad/squares.py

.../benchmarks/defoDefoContactSlaveEdge2DQuadPert/squares.py

dG3D/benchmarks/linearEMT/LinearElecMagTherm.py

dG3D/benchmarks/linearEMT_Pert/LinearElecMagTherm_Pert.py

dG3D/benchmarks/linearElectroMagnetic/LinearElecMag.py