Add blog post

- Add draft of post about OTCs which can cause AEs that affect driving
- Change post author logic to use author `name` as key instead of
author email
- Add support for author `fullname` (including credentials)
- Add logic for explicit post summary in place of `post.excerpt`
(necessary because posts with footnotes do not render properly in
`post.excerpt`
- Add bootstrap table class to all tables
- Add picture for Roy Xu
- Make all blog post titles consistent and sentence case