Bug 13781: Fix relatives's checkouts missing heading columns

Bug 13781: Fix relatives's checkouts missing heading columns

There was two missing heading columns (location and fine) and one hidden heading missing column (this hidden column is needing for sorting the table) it was taking the due_date column for the hidden column, so I added them

Both patches tested together. Works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>
(cherry picked from commit e0e3efacca9e4e605f0e1c5612ace38194a2f878)
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>