Bug 14078: (followup) converting from ISO5426 is not complete
Conversion of MARC from ISO5426 is defined in C4::Charset::char_decode5426().
Each character or combined characters conversion is defined in a map.
This patch adds missing conversions.
See http://www.gymel.com/charsets/MAB2.html
Signed-off-by: Frederic Demians <f.demians@tamil.fr> Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org> Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>