Update csv fields as per My Books > Import > sample file

Signed-off-by: Davide Viti <zinosat@tiscali.it>
Books must have ISBN otherwise are not imported. List the books without ISBN

Signed-off-by: Davide Viti <zinosat@tiscali.it>
Handle Italian database format and incomplete dates

Signed-off-by: Davide Viti <zinosat@tiscali.it>