Fix handling of None in agent lists
Fix handling of None in agent lists

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