ka-customizer: better check for determining if a knowledge app https://phabricator.endlessm.com/T13878
ka-customizer: better check for determining if a knowledge app
https://phabricator.endlessm.com/T13878

endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib,endlessm/eos-knowledge-lib