googleProtocol variable

We don’t need to specify protocol for good font, because it will only
work on http:// and not on https://.

Just meet this error: Mixed Content: The page at 'https://<site>/’ was
loaded over HTTPS, but requested an insecure stylesheet
'http://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic
&subset=latin'. This request has been blocked; the content must be
served over HTTPS.