first 4 python swig api tests: test_ReactionIds, test_SetSteadyStateSelectionList, test_SetSteadyStateSelectionList, test_load
added test_myComputeSteadyState, test_SetSteadyStateSelectionList, need to fix test_SpeciesConcentrations expectappx
added test_Fluxes, test_SpeciesConcentrations
removed some comment lines with old code