patch updates to crawler fetcher

[thepsalmist]

Modify the query to insert into feeds_stories_map, and add logging.
The where not exists check prevents duplicates assuming a partitioned table, but query to check if feed_stories_map is partitioned returns False

SELECT table_name, pg_get_expr(partrelid, relid) AS partition_expression FROM pg_partitioned_table JOIN pg_class ON pg_class.oid = partrelid JOIN pg_namespace ON pg_namespace.oid = relnamespace WHERE table_name = 'feeds_stories_map_p' AND nspname = 'public';
returns 0 rows,

The query update solves the Invalid query error

Invalid query: there is no unique or exclusion constraint matching the ON CONFLICT specification