Awkardly large commit to Dockerize

As part of this, jekyll versions were upgraded and other gnarly changes
(including reverting hacked-up Rakefile/Gemfile).
Try something weird for test
Finally get Dockerfile correct
Fix annoying pygments message
Get nginx servin' up them files
Check last week's article into version control
Update submodule theme
Remove gem no longer used
Correct improper versions
Remove article from tracked in source
Update submodules
Test automated blog deploy
Test worked!
Do nginx the right way
Create automagical deploy article
Update 2014-08-16-automagical-deploys-from-docker-hub.markdown
Fix minor typo
Revise sentence to be a paragraph a bit
Update submodule
Update submodule