The salinity value was not displayed with localized thousands separators.
E.g. to a user of a German locale the density read as slightly over
1 g/l, when it should be approximately 1000 g/l. For consistency, also
localize that value.
Also localize the CNS and OTU numbers, even though these should
(hopefully!) never come with thousands separators.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>