[gnome-contacts] Remove `.desktop` from Appdata id and add some missing tags.

[Niels De Graef <nielsdg src gnome org>]

commit f3a94863b7255df19f5f38d3e4d3b93002b1701c
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Mon Dec 10 12:27:31 2018 +0000

    Remove `.desktop` from Appdata id and add some missing tags.

 data/org.gnome.Contacts.appdata.xml.in | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
---
diff --git a/data/org.gnome.Contacts.appdata.xml.in b/data/org.gnome.Contacts.appdata.xml.in
index caf3f66..25f1add 100644
--- a/data/org.gnome.Contacts.appdata.xml.in
+++ b/data/org.gnome.Contacts.appdata.xml.in
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop">
-  <id>org.gnome.Contacts.desktop</id>
+  <id>org.gnome.Contacts</id>
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>GPL-2.0-or-later</project_license>
   <name>Contacts</name>
@@ -224,11 +224,15 @@
     <kudo>ModernToolkit</kudo>
     <kudo>SearchProvider</kudo>
   </kudos>
+  <provides>
+    <binary>gnome-contacts</binary>
+  </provides>
   <url type="homepage">https://wiki.gnome.org/Apps/Contacts</url>
   <url type="bugtracker">https://gitlab.gnome.org/GNOME/gnome-contacts/issues</url>
   <url type="donation">http://www.gnome.org/friends/</url>
   <update_contact>nielsdg gnome org</update_contact>
   <project_group>GNOME</project_group>
+  <launchable type="desktop-id">org.gnome.Contacts.desktop</launchable>
   <translation type="gettext">gnome-contacts</translation>
   <content_rating type="oars-1.1">
     <content_attribute id="violence-cartoon">none</content_attribute>