Update stuff in appdata.xml and run 'appstream-utl upgrade' on it.

dist/unix/qBittorrent.appdata.xml

@@ -36,26 +36,31 @@
   </description>
   <screenshots>
     <screenshot type="default">
-   <image width="1200" height="675">
+      <image height="675" width="1200">
     https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_01.png
    </image>
     </screenshot>
     <screenshot>
-   <image width="1200" height="675">
+      <image height="675" width="1200">
     https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_02.png
    </image>
     </screenshot>
     <screenshot>
-   <image width="1200" height="675">
+      <image height="675" width="1200">
     https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_03.png
    </image>
     </screenshot>
     <screenshot>
-   <image width="1200" height="675">
+      <image height="675" width="1200">
     https://alexpl.fedorapeople.org/AppData/qbittorrent/screens/qbittorrent_04.png
    </image>
     </screenshot>
   </screenshots>
   <url type="homepage">http://www.qbittorrent.org/</url>
   <update_contact>sledgehammer999@qbittorrent.org</update_contact>
+  <developer_name>The qBittorrent Project</developer_name>
+  <url type="bugtracker">http://bugs.qbittorrent.org/</url>
+  <url type="donation">https://www.qbittorrent.org/donate</url>
+  <url type="help">http://forum.qbittorrent.org/</url>
+  <url type="translate">https://github.com/qbittorrent/qBittorrent/wiki/How-to-translate-qBittorrent</url>
 </component>