Adding rate-dependence to cohesive model, new name: IntMatBilinearCZFagerstromRate
Merge remote-tracking branch 'origin/master' into XFEMDevelopment_Martin

Conflicts:
	src/oofemlib/dofmanager.C
	src/sm/CMakeLists.txt
	src/sm/shell7basexfem.C
	src/sm/structuralinterfacecrosssection.H