fix twitter embeds #blog

Hardcoded the social proof tweets section to static HTML for cleaner look and faster page load, because Twitter's widget.js is just horrible. This is like my 3rd 9and hopefully final) iteration. 1st version was plain Twitter embed. 2nd was Twitter embed with lazy loading using lozad.js. 3rd is responsive static HTML. What do you think? Does it look better? #pluginsforcarrd