* always include the title
* make it possible to skip adding the title by passing `title=' '`
* remove viewBox since we don't need it

This allows us to generate the anchor links on build time.

https://github.com/allejo/jekyll-anchor-headings

https://blog.travis-ci.com/2018-11-19-required-linux-infrastructure-migration

For Markdown files, this isn't needed because the Markdown converter takes care of this.

- Add headings to examples section
- Clarify styles and customization options in examples
- Add dismiss buttons to all toasts
- Missing period added for consistency
- Update roles, tweak text

Also remove close button everywhere just let it when autohide is set to false