Load jquery via https

So that https://www.exvo.com/ works without warnings (first step).
Load kissmetrics via https

So that www.exvo.com loaded via https loads "assets" properly.
Load vimeo iframe via https

So it loads when visiting https://www.exvo.com/
Load LinkedIn follow button via https

So that it works when loading marketing page via https.
Fix Google Plus +1 href attribute

So that it's our actual page (www.exvo.com).