More checks for "large amount of dead tuples"
Edited the "large amount of dead tuples" section:
- more actions to diagnose the autovacuum behavior,
- how to check root cause of increased n_dead_tup (if there were a lot of DELETEs and UPDATEs happened recently)
The section still may be improved in terms of the list of possible actions to resolve the problem.
Edited by Nikolay Samokhvalov