Filter Hook: Filter applied before getting tags.
Method: Add category pages rewrite rule.
Method: Filter main questions query args. Modify and add tags args.
Method: Add tags sorting in list filters
Method: Ajax callback for loading order by filter.
Method: Ajax callback for loading order by filter for tags.
Method: Output active tag in filter
Method: Output active tags_order in filter
Method: Modify current page to show tag archive.
Method: Modify main query to show tag archive.