records.
Fix: init of $limit not correctly set according to 3.9 rules on most
pages.

$page) and not ($offset = $conf->liste_limite * $page).
In a future $limit that could be overwrite from search post form.

- amount < 1 was considered as 0
- 0.00 was not considered as empty so $book->sens was always C

Fix: language key

- pagination
- prise en compte des filtres lors d'un changement de page