[gnome-builder] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit 06575cdd222f63e22830215c290cf959555cbbdc
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jul 17 20:33:28 2016 +0200

    Add Language headers to po files
    
    Future versions of gettext will fail if this header is missing.

 po/de.po       |    2 +-
 po/es.po       |    2 +-
 po/nb.po       |    2 +-
 po/sl.po       |    2 +-
 po/sr latin po |    2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/po/de.po b/po/de.po
index a8861f1..2157327 100644
--- a/po/de.po
+++ b/po/de.po
@@ -16,7 +16,7 @@ msgstr ""
 "PO-Revision-Date: 2016-06-25 21:40+0200\n"
 "Last-Translator: Christian Kirbach <christian kirbach gmail com>\n"
 "Language-Team: Deutsch <gnome-de gnome org>\n"
-"Language: de_DE\n"
+"Language: de\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/es.po b/po/es.po
index c0749b6..f39b8ae 100644
--- a/po/es.po
+++ b/po/es.po
@@ -16,7 +16,7 @@ msgstr ""
 "PO-Revision-Date: 2016-07-07 10:01+0200\n"
 "Last-Translator: Daniel Mustieles <daniel mustieles gmail com>\n"
 "Language-Team: Español; Castellano <gnome-es-list gnome org>\n"
-"Language: \n"
+"Language: es\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/nb.po b/po/nb.po
index 4c7e145..6a28497 100644
--- a/po/nb.po
+++ b/po/nb.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2015-08-06 15:55+0200\n"
 "Last-Translator: Kjartan Maraas <kmaraas gnome org>\n"
 "Language-Team: Norsk, bokmål <i18n-nb lister ping uio no>\n"
-"Language: \n"
+"Language: nb\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/sl.po b/po/sl.po
index fb10655..f831293 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2016-03-22 21:35+0100\n"
 "Last-Translator: Matej Urbančič <mateju svn gnome org>\n"
 "Language-Team: Slovenian GNOME Translation Team <gnome-si googlegroups com>\n"
-"Language: sl_SI\n"
+"Language: sl\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
diff --git a/po/sr latin po b/po/sr latin po
index ee83e26..500c6fe 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -15,7 +15,7 @@ msgstr ""
 "PO-Revision-Date: 2016-03-29 18:26+0200\n"
 "Last-Translator: Marko M. Kostić <marko m kostic gmail com>\n"
 "Language-Team: srpski <gnome-sr googlegroups org>\n"
-"Language: sr\n"
+"Language: sr@latin\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"