Bug 23846: Add a check to the data inconsistencies script

Bug 23846: Add a check to the data inconsistencies script

This may be quite long for big catalogue, but I think it is a good one
to have.

Test plan:
Same as first patch, then execute search_for_data_inconsistencies.pl
Notice the error.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 1e1c5d17a268c6d493c2c71d4b456da7749655c3)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>