[i18n] Translated strings don't work

[Manuel Perez Ayala]

Hello.

Both in IMP 4.1 rc1 and rc3 The strings:

#: attachment.php:89
msgid "Notification: Linked attachment downloaded"
msgstr "Notificación: Adjunto vinculado descargado"

And

#: attachment.php:94
#, php-format
msgid ""
"Your linked attachment has been downloaded by at least one user.\n"
"\n"
"Attachment name: %s\n"
"Attachment date: %s\n"
"\n"
"Click on the following link to permanently delete the attachment:\n"
"%s"
msgstr ""
"El archivo adjunto vinculado ha sido descargado al menos por un usuario:\n"
"\n"
"Nombre del adjunto: %s\n"
"Fecha del adjunto: %s\n"
"\n"
"Pulse el vínculo siguiente para eliminar de forma permanente el adjunto:\n"
"%s"

are translated to spanish in po files.

When I send a message with a linked attachment, the download  
notification message are not translated at all.

----------
Manuel Perez Ayala
mperaya en alcazaba.unex.es
Facultad de Biblioteconomía y Documentación
Universidad de Extremadura