Fixed issue where the Disqus auto color scheme was incorrectly selecting the dark scheme.

Added a css rule to change body color for Disqus div.
Reformatted Disqus comments to be inside disqus_thread div.

I am running with these changes, you can see an example here:
http://travispavek.com/google-search-your-relationships/

Before:
![Disqus before fix](https://f.cloud.github.com/assets/1483906/2156911/6914a13c-946c-11e3-85a1-b7ccbd04f8e1.png)

After:
![Disqus after fix](https://f.cloud.github.com/assets/1483906/2156913/70deaca0-946c-11e3-9e17-f29b69f33053.png)