In the live preview we are using a few additional plugins. These are for various things like Flickr E-mail Newsletter sign-ups. Here is a list of these plugins if you want to use the same functionality:
Multiple Sidebars:
https://wordpress.org/plugins/multiple-sidebars/
Twitter Widget Pro:
https://wordpress.org/plugins/twitter-widget-pro/
Flickr Badges Widget
https://wordpress.org/plugins/flickr-badges-widget/
Instagram Feed:
https://wordpress.org/plugins/instagram-feed/
MailChimp for WordPress (Newsletter Sign-up):
https://wordpress.org/plugins/mailchimp-for-wp/
WP Retina-WP (Adds Retina image functionality to site):
https://wordpress.org/plugins/wp-retina-2x/