Add site subtitle
Added Github User

- No mention of `GITHUB_USER` in docs, only in Octopress Migration example (https://github.com/jakevdp/PythonicPerambulations/blob/master/pelicanconf.py)
Re-organized settings file
Additional settings for github
Update submodule to point at work-in-progress
Added Disqus support

- Need to verify old comments still work? Maybe
Updated plugins commit
Add menu items for `Archives`, `Blog`

- Need to point theme at (in-development) `contextual-disqussions` branch
Set default category for blog posts
Fixed broken `Archives` link
Added Google Analytics ID

- What else is remaining from this? Anything? Certainly *looks* like existing
  setup...
Changed date format
Merge pull request #6 from nt3rp/site-settings

Added Settings