Fix some small bugs in util index.
Fix some small bugs in util index.

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