mysociety/alaveteli — pull request #1432 by garethrees (2014-04-10 11:54:41+00:00)
Title: [#1346] Rescue from non-numeric page parameter exceptions

will_paginate intentionally throws an `ArgumentError` when a non-numeric page
parameter is used. Conveniently, they tag it with `WillPaginate::InvalidPage`,
so here we rescue with a 404.