Bug 15240: [QA Follow-up] Minor adjustments

Bug 15240: [QA Follow-up] Minor adjustments

This patch does:
[1] It removes some unused modules.
[2] It adds some options not listed in the synopsis.
[3] It removes an unused sql expression from one query.
    Note: In fines related code the third parameter of CalcFine sometimes
    is named as days_overdue too.
[4] Corrects a few typos in comments or pod.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit 8d072272fa396820ec655fb7b45d30eee6fca3e8)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
(cherry picked from commit b94fc3419dc04d06d7557753cea619633ab4c8dd)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>