Add ToC to top of Basics page

The Basics page has a lot of content on it and the sections are all
independent so scrolling through the page to find something doesn't
work well. The ToC on the sidebar is difficult to read when titles
are long and it's not obvious, so I'm putting a more obvious ToC
on the page to make navigation easier.
Use a glossary instead of rubric headers

- Glossary makes the sections easier to read and saves space

- Also reduce word count by removing unimportant text
Move report page to a section in basics