Bug 11314: restore ability to see only 5 entries on parcel.pl

Bug 11314: restore ability to see only 5 entries on parcel.pl

Bug 9130 removed the ability to limit the tables on parcel.pl to 5 rows,
as well as the "sticky" feature. It is trivial to restore this
functionality. These datatables are already using bStateSave, so are
they are "sticky" already. The only part left is to enable the
ability to limit the table to 5 rows at a time.

Test Plan:
1) Apply this patch
2) Browse to parcel.pl
3) Note the default rows count is still 10
4) Note the option to limit the row count to 5

Signed-off-by: David Cook <dcook@prosentient.com.au>
Works as described.

Double-checked that the "sticky" feature is still in place thanks
to bStateSave.

I didn't notice a difference due to iDisplayLength being added, but
the extra option of "5" to the list is there.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>