Updated favicons
Disqus support

Config:
* to get your user_id (quickly): go to disqus.com, log in, open the
developer console and type: `context.auth.user_id`
* you need to create and app and add the public key as an setting

User user_id = 1 for demo (this is the one hinted at in the
documentation).
Disqus support
Merge pull request #122 from arminrosu/master

Disqus Support & Updated Favicons