[gnome-nettool] Update AppData to modern format

[Piotr Drąg <piotrdrag src gnome org>]

commit 578f63891f6b6053580fd7ed772f077e9f93cd8f
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Tue Oct 3 22:07:53 2017 +0200

    Update AppData to modern format
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788358

 data/gnome-nettool.appdata.xml.in |   27 +++++++++++++++++----------
 1 files changed, 17 insertions(+), 10 deletions(-)
---
diff --git a/data/gnome-nettool.appdata.xml.in b/data/gnome-nettool.appdata.xml.in
index f0d6488..227637c 100644
--- a/data/gnome-nettool.appdata.xml.in
+++ b/data/gnome-nettool.appdata.xml.in
@@ -3,11 +3,8 @@
   Copyright © 2014 Ryan Lerch <rlerch redhat com>
   Copyright © 2017 Germán Poo-Caamaño <rlerch redhat com>
 -->
-<application
-  xmlns="https://www.freedesktop.org/standards/appdata/1.0";
-  xmlns:xi="http://www.w3.org/2001/XInclude";
-  xmlns:its="http://www.w3.org/2005/11/its";>
-  <id type="desktop">gnome-nettool.desktop</id>
+<component type="desktop">
+  <id>gnome-nettool.desktop</id>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>GPL-2.0+</project_license>
   <name>Network Tools</name>
@@ -25,11 +22,21 @@
       traceroute, port scans, lookup, finger and whois.
     </p>
   </description>
-  <!-- <url type="homepage">http://projects.gnome.org/gnome-network/</url> -->
   <screenshots>
-    <screenshot 
type="default">https://projects.gnome.org/gnome-network/screenshots/info_info.jpg</screenshot>
-    <screenshot>https://projects.gnome.org/gnome-network/screenshots/info_netstat.jpg</screenshot>
-    <screenshot>https://projects.gnome.org/gnome-network/screenshots/info_lookup.jpg</screenshot>
+    <screenshot type="default">
+      <image>https://projects.gnome.org/gnome-network/screenshots/info_info.jpg</image>
+    </screenshot>
+    <screenshot>
+      <image>https://projects.gnome.org/gnome-network/screenshots/info_netstat.jpg</image>
+    </screenshot>
+    <screenshot>
+      <image>https://projects.gnome.org/gnome-network/screenshots/info_lookup.jpg</image>
+    </screenshot>
   </screenshots>
+  <url type="bugtracker">https://bugzilla.gnome.org/enter_bug.cgi?product=gnome-nettool</url>
+  <!-- <url type="homepage">http://projects.gnome.org/gnome-network/</url> -->
+  <url type="translate">https://wiki.gnome.org/TranslationProject</url>
+  <developer_name>The GNOME Project</developer_name>
+  <project_group>GNOME</project_group>
   <translation type="gettext">gnome-nettool</translation>
-</application>
+</component>