Docs: Refactor Elasticsearch docs
Problem to solve
Over time, the Elasticsearch docs have grown to more than 1,300 lines. We should look for ways to break up the page.
Proposal
The new structure could look like this:
- Elasticsearch installation
- Elasticsearch indexing
- Enable advanced search
- Zero-downtime reindexing
- Advanced search migrations
- Advanced search Rake tasks
- Optimize advanced search settings
Edited by Ashraf Khamis