Fix bugs in Pybel MC
Fix bugs in Pybel MC

bgyori/indra,sorgerlab/belpy,johnbachman/indra,sorgerlab/indra,bgyori/indra,sorgerlab/indra,bgyori/indra,johnbachman/indra,johnbachman/indra,sorgerlab/indra,sorgerlab/belpy,sorgerlab/belpy,johnbachman/belpy,johnbachman/belpy,johnbachman/belpy