Mark new string for translation

This needs to be the same string as used for the entry in the Import
dialog... since translate() is a macro in this .c file and defined to have
only two arguments, I'm using the NOOP3 macro to get this correctly added
to the translation sources, including the comment. That makes the code a
little odd, but seems to work.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Another update of strings and translations

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>