filter out classes with no category when constructing triples for ontology "browser" closes #795, #791, #792
filter out classes with no category when constructing triples for
ontology "browser" closes #795, #791, #792
jmcmurry/monarch-app,kshefchek/monarch-app,jmcmurry/monarch-app,DoctorBud/monarch-app,DoctorBud/monarch-app,kshefchek/monarch-app,DoctorBud/monarch-app,jmcmurry/monarch-app,monarch-initiative/monarch-app,monarch-initiative/monarch-app,kshefchek/monarch-app,monarch-initiative/monarch-app,monarch-initiative/monarch-app,monarch-initiative/monarch-app,jmcmurry/monarch-app,kshefchek/monarch-app,kshefchek/monarch-app,DoctorBud/monarch-app,jmcmurry/monarch-app,DoctorBud/monarch-app