* Save As:
- Still offer the existing directory, but not the existing
file, because it's not a good default.
- Warn and ask again if the chose file is read-only, or the
directory is read-only, though I think GtkFileChooser
should do this.
* New translations:
- Vietnamese (Clytie Siddall)
- Finnish (Ilkka Tuohela)
* Updated translations:
- Brazilian Portuguese (Raphael Higino)
