selector: fix fallback when column.label isn't set; refs #324
selector: fix fallback when column.label isn't set; refs #324

dylans/dgrid,maier49/dgrid,dylans/dgrid,maier49/dgrid,kfranqueiro/dgrid,maier49/dgrid,kfranqueiro/dgrid,kfranqueiro/dgrid,dylans/dgrid