* Docs refactor as outlined in https://github.com/ansible/proposals/issues/79. Moves content into 'guides'; refactors TOC; fixes CSS; design tweaks to layout and CSS; fixes generated plugin, CLI and module docs to fix links accodingly; more.
* Adding extra blank line for shippable
This commit:
- Adds a table highlighting the status of each version and provides
a link to each major release's changelog
- Re-inforces how stable versions are maintained and for how long
- Moves this documentation out of the developer tree (this is
interesting for users too!) while keeping a link there.