[tasque] Add missing header

[Kjartan Maraas <kmaraas src gnome org>]

commit 5641a22b725761f666e278c70151ce88bc2797d7
Author: Kjartan Maraas <kmaraas gnome org>
Date:   Thu May 30 21:32:48 2013 +0200

    Add missing header

 po/nb.po |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/nb.po b/po/nb.po
index fed031f..bf4a6a7 100644
--- a/po/nb.po
+++ b/po/nb.po
@@ -16,6 +16,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
 #: ../data/tasque.desktop.in.h:1
 msgid "Tasque"