Merge branch 'TH2M_swelling_stress' into 'master'

MaterialLib/MPL/Properties/SaturationDependentSwelling.cpp

ProcessLib/TH2M/IntegrationPointData.h

ProcessLib/TH2M/LocalAssemblerInterface.h

ProcessLib/TH2M/TH2MFEM-impl.h

ProcessLib/TH2M/TH2MFEM.h

ProcessLib/TH2M/TH2MProcess.cpp

ProcessLib/TH2M/Tests.cmake

Tests/Data/TH2M/H2M/OrthotropicSwelling/square.prj

Tests/Data/TH2M/H2M/OrthotropicSwelling/square_1x1.gml

...ata/TH2M/H2M/OrthotropicSwelling/square_1x1_quad8_1e0.vtu

...TH2M/H2M/OrthotropicSwelling/square_ts_104_t_3.000000.vtu

.../TH2M/H2M/OrthotropicSwelling/square_ts_25_t_0.500000.vtu

.../TH2M/H2M/OrthotropicSwelling/square_ts_50_t_1.000000.vtu

.../TH2M/H2M/OrthotropicSwelling/square_ts_54_t_2.000000.vtu

...a/TH2M/H2M/OrthotropicSwelling/square_ts_5_t_0.100000.vtu

.../TH2M/H2M/OrthotropicSwelling/square_ts_79_t_2.500000.vtu

.../TH2M/H2M/OrthotropicSwelling/square_ts_99_t_2.900000.vtu