[gnome-calendar] Add Language headers to po files

[Piotr Drąg <piotrdrag src gnome org>]

commit 74d5ed62efd110d638643546f34bb474ab0d911c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sun Jul 17 20:50:07 2016 +0200

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

 po/en_GB.po    |    2 +-
 po/nb.po       |    2 +-
 po/sl.po       |    2 +-
 po/sr latin po |    2 +-
 po/zh_HK.po    |    2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/po/en_GB.po b/po/en_GB.po
index 98a2de7..eeaf5cc 100644
--- a/po/en_GB.po
+++ b/po/en_GB.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2015-10-20 13:30+0000\n"
 "Last-Translator: Abigail Brady <morwen evilmagic org>\n"
 "Language-Team: \n"
-"Language: \n"
+"Language: en_GB\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 c9c215e..1e78bb5 100644
--- a/po/nb.po
+++ b/po/nb.po
@@ -12,7 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2016-02-28 16:54+0100\n"
 "Last-Translator: Kjartan Maraas <kmaraas gnome org>\n"
 "Language-Team: Norwegian 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 1704bb8..0ba610a 100644
--- a/po/sl.po
+++ b/po/sl.po
@@ -13,7 +13,7 @@ msgstr ""
 "PO-Revision-Date: 2016-03-22 21:39+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 b491819..e60c00d 100644
--- a/po/sr latin po
+++ b/po/sr latin po
@@ -12,7 +12,7 @@ msgstr ""
 "PO-Revision-Date: 2016-02-18 18:55+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"
diff --git a/po/zh_HK.po b/po/zh_HK.po
index 2ddcc1f..5bb392f 100644
--- a/po/zh_HK.po
+++ b/po/zh_HK.po
@@ -11,7 +11,7 @@ msgstr ""
 "PO-Revision-Date: 2013-09-30 19:28+0800\n"
 "Last-Translator: Cheng-Chia Tseng <pswo10680 gmail com>\n"
 "Language-Team: Chinese (Hong Kong) <community linuxhall org>\n"
-"Language: zh_TW\n"
+"Language: zh_HK\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"