First section templates render the most recent $n yearly subsections as a list of
articles.
Descendent sections render just the content of those subsections.
Remove the main intermediate container. It wasn't acutally serving a purpose.
Remove some of the BEM-style classes that also weren't really doing anything.
Write styles and templates for a more generic tag/value component. Use this component
for the taxonomy lists, draft tag, and page dates in the summary template.
