Merge branch 'debug-stengel' into 'master'

cardmech/conf/coupled.conf

cardmech/conf/elasticity.conf

cardmech/conf/elasticity_benchmarks/beam.conf

cardmech/conf/elasticity_benchmarks/ellipsoid.conf

cardmech/conf/klotz.conf

cardmech/conf/m++.conf

cardmech/src/elasticity/assemble/DGElasticity.cpp

cardmech/src/elasticity/assemble/DGElasticity.hpp

cardmech/src/elasticity/assemble/EGElasticity.cpp

cardmech/src/elasticity/assemble/EGElasticity.hpp

cardmech/src/elasticity/assemble/FiniteElasticity.cpp

cardmech/src/elasticity/assemble/LagrangeElasticity.cpp

cardmech/src/elasticity/assemble/LagrangeElasticity.hpp

cardmech/src/elasticity/assemble/dgElasticity.cpp

cardmech/src/elasticity/materials/GuccioneMaterial.hpp

cardmech/src/elasticity/materials/HolzapfelMaterial.hpp

cardmech/src/elasticity/materials/LinearMaterial.hpp

cardmech/src/elasticity/materials/Material.hpp

...ech/src/elasticity/problem/ElasticityBenchmarkProblem.hpp

cardmech/src/local_mpp/EGVectorFieldElement.cpp