Work on why we have an empty <body/> tag

- Seems to come because the sanitizer ends up with two nodes, not one. The
first is an empty body, the second is the article div.
- Fix up the tabs so we can work with the file. Needs lots of pep8 love.
- Implement an initial hack that at least gets it working atm.
- Start to add test cases, sample html files we can test against, etc.