[evolution-activesync] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit 681a3576289246076d5b774eb44baff6bf54705b
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jul 16 01:07:02 2016 +0200

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

 po/nb.po       |    2 +-
 po/sl.po       |    2 +-
 po/sr latin po |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/po/nb.po b/po/nb.po
index 2103be9..52864e8 100644
--- a/po/nb.po
+++ b/po/nb.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2012-06-16 21:45+0200\n"
 "Last-Translator: Kjartan Maraas <kmaraas gnome org>\n"
 "Language-Team: LANGUAGE <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 3e6a610..eaa972e 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2016-03-12 21:21+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 c311019..85af253 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2015-12-30 08:54+0200\n"
 "Last-Translator: Miroslav Nikolić <miroslavnikolic rocketmail com>\n"
 "Language-Team: Serbian <gnom prevod 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"