Changes:
* Moves sample data to reusable rest test
* Combines EQL index, requirements, and run a search pages
* Combines EQL syntax and limitations pages
* Adds related redirects
Changes:
* Swaps the `dev` admonitions for `experimental` admonitions
* Removes `ifdef` statements preventing the docs from appearing in
released branches
Removes references to partial results from the async EQL search docs.
If an EQL search does not complete during the `wait_for_completion_timeout`
timeout period, it returns no results.
James Rodewig
James Rodewig
Igor Motov