OPAC 7.x-2.3

! [7.x-2.2] RM 1573 - Use FALSE boolean and not 'FALSE' as string.
 ! [7.x-2.3] Security fix: Prevent CSRF on content type mapping deletion
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 + [c63d4f4] Security fix: Prevent CSRF on content type mapping deletion
 + [e0d3033] RM 1540 - Fix parse errors,   Remove useless strings   fix dcs issues
 + [3614a27] RM 1540 - Fix dcs issues.
 + [cd32893] RM 1540 - Translate strings for opac users module.
 + [6472561] RM 1540 - Translate strings for opac register module.
 + [f78cfde] RM 1540 - Translate strings for opac items module.
 + [3d9f25a] RM 1540 - Translate strings for opac authority module.
 + [fb40101] RM 1540 - Translate strings for opac module.
++ [c16ec8c] RM 1573 - Use FALSE boolean and not 'FALSE' as string.