modelName member variable is added to class Specie for all models

It is also assigned to an empty string in the corresponding
constructors.

	modified:   model.cpp
	modified:   model.h
	modified:   model00.cpp
	modified:   model00.h
	modified:   model001.cpp
	modified:   model001.h
	modified:   model002.cpp
	modified:   model002.h
	modified:   model003.cpp
	modified:   model003.h
	modified:   model004.cpp
	modified:   model004.h
	modified:   model005.cpp
	modified:   model005.h
	modified:   model006.cpp
	modified:   model006.h
	modified:   model007.cpp
	modified:   model007.h
	modified:   model008.cpp
	modified:   model008.h