Update to Bootstrap 3
Rename a whole bunch of CSS classes and swap to new bootstrap files.
Redesign navbar around Bootstrap 3
Speculative removal of more JS files.

Plus application.js and docs.css which should never have gotten in
in the first place.
Re-add icons for class info.
Rewrite class info to match 2.3 styling.
Rendered unnecessary by oer.mak
Quiz list from ul to ol.
`.unstyled` -> `.list-unstyled`
Collapse oer.mak
Retab blogs.mak
Re-add bolded headers.
Change blog post count display
Try fixing one lecture.
Fix the rest of the lectures.