The latest (2.6.2) docsearch.js version now displays results as standard `<a href>` links, allowing users to `ctrl`-click on them to trigger default browser behavior of opening in a new tab.

To maintain backward compatibility, this behavior has only been enabled to users that didn't define their own `handleSelected` method.

This PR updates your `docsearch()` code to take advantage of the new `<a href>` template, by removing your custom `handleSelected` and moving its behavior to the `transformData` call. Namely, what you wanted to avoid was jumping to the first `<h1>` of the pages, which would prevent users from seeing the header. This PR checks if the suggestion targets the `#content` anchor (meaning it goes to this first `<h1>`) and remove it.

Behavior should be the same, but at least now you can enjoy the `ctrl`-click :)

Previously we were using the old holder.js colors.

Leftover from old times.

* 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