Corrections & updates 2012

Added DFP (NEW) to header, added subscriptions to single post (RSS,
Newsletter, Mediabugs), thumbnail-link to article, iframe functions,
removed Hellobar, added (incorrect code) for Slidedeck-excerpt to limit
width, adjusted mediaquery for slidedecks widgets 3+4, mashsocial CSS
tweak, removed mailchimp CSS tweaks, removed social buttons in CSS,
nav-updates