Use has_name instead of has_chebi_id to match the current bio-atomspace

[tanksha]

@noskill Its suggested that the human readable names of a molecules (e.g "serotonin") has to be replaced with "ChEBI:28790" to have the following:

(EvaluationLink
        (PredicateNode "has_name")
        (ListLink            
            (MoleculeNode "ChEBI:28790")
            (ConceptNode "serotonin"))))

instead of

(EvaluationLink
        (PredicateNode "has_chebi_id")
        (ListLink
            (MoleculeNode "serotonin")
            (ConceptNode "ChEBI:28790"))))