Some users might get stuck with an unnusable fast input if they
select a high-number page (this fast-input list method doesn't
scale well). Reseting page allows them to recover.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@42678 20353a03-c40f-0410-a6d1-a30d3c3de9de