Fixed import error message to be more accurate

svn: r11369

src/DbLoader.py

@@ -154,7 +154,7 @@ class DbLoader:
                     _("Could not open file: %s") % filename, 
                     _('File type "%s" is unknown to GRAMPS.\n\n'
                       'Valid types are: GRAMPS database, GRAMPS XML, '
-                      'GRAMPS package, and GEDCOM.') % extension)
+                      'GRAMPS package, GEDCOM, and others.') % extension)
 
         import_dialog.destroy()
         return False