Bug 8028 - Make table collapsing on parcel.pl sticky

Bug 8028 - Make table collapsing on parcel.pl sticky

The tables on parcel.pl default to show only the first
five items in the table, and librarians must click the
a link to display all the items. Every time the page is
reloaded, the table gets re-collapsed, and the librarian
must again click the link. Parcel.pl should remember
which way the table is set and keep it that way until
it is changed again.

This is accomplished by adding two cookies for this page,
one for each table. This cookie stores the state of the
table ( collapsed, or uncollapsed ) and sets each table
to the correct state on each page load.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Works as expected.

But a "funny" behaviour, if I have only 1 item (or < 6):
  All 1 items are displayed. Click here to show only the first 5 items.
and
  Only the first 5 items are displayed. Click here to show all 1 items.