Fix up the JavaScript-Integration.elm post and add syntax highlighting for |> and <|
Make improvements in the types and ADT documentation.

Give the learning docs a better order on the About page.
Make the About page friendlier.
Add a way to automatically generate docs.
Merge remote-tracking branch 'upstream/dev' into merge-hints2-dev
Update codemirror to 3.12
Rename codemirror folder
Update links for codemirror 3.x
Add markdown css and work on styling inline doc. Some refactoring