Bug 16112: Add the ability to define due date for batch renew

Bug 16112: Add the ability to define due date for batch renew

Same as bug 16748, for batch renew.

Test plan:
Check an item in
Renew it using the circ/renew.pl page
=> You can pick a due date!
=> The date is kept from one renew to another
Renew it until you reach the maximum number of renewals
=> You get a warning with "continue without renewing"
=> The date is still kept

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>