Make search usable for all sites
- All languages are searchable;
- Not only content but also frontmatters are searchable;
- Make it more reliable by using literal search instead of fuzzy search;
- Search results are sorted by date and title;
- Only show matching posts' info, no marking for matching snippets anymore;
- So no external library at all.
To enable search for a site:
- Enable JSON output for 'home'
- Set site param 'searchable' to 'true'