Add math syntax highlighting and enable asciimath for future notebooks
Fix syntax highlighting for lists to include indented lists.
Add quick navigation that can be easily accessed with Ctrl+G.
Complete mathjax support by pointing to the mathjax cdn by default. Users can configure which mathjax they want by changing the mathJax setting value to point to a local installation or copy.
Make sure that the highlighting for headers also works for setext style headers (for consistency reasons)
Flip the > to a < when checking for fences and $$'s