Two different questions:
1. The link rel=`dns-prefetch` href=`//fonts.googleapis.com` shows a 404 with some audit tools - Is this okay to leave in and is okay? rel=`dns-prefetch` href=`//fonts.googleapis.com`
2. Re Publisher - Google + was (I believe) good practice to have as `publisher` - with the forthcoming demise of G+1 would GMB be an option to use as `publisher` or is publisher not really of any use/benefit anymore?