[evince] flatpak: add gnome-desktop dependency

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 3c89f349d5ce5d0cc0f039be872f9af6498b2039
Author: Jason Crain <jcrain src gnome org>
Date:   Sun Jul 21 14:51:35 2019 -0600

    flatpak: add gnome-desktop dependency
    
    This library is needed to cache thumbnails on the Recent Documents view.

 build-aux/flatpak/org.gnome.Evince.json | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Evince.json b/build-aux/flatpak/org.gnome.Evince.json
index b1730023..a59b4990 100644
--- a/build-aux/flatpak/org.gnome.Evince.json
+++ b/build-aux/flatpak/org.gnome.Evince.json
@@ -146,6 +146,25 @@
                 }
             ]
         },
+        {
+            "name" : "gnome-desktop",
+            "buildsystem" : "meson",
+            "config-opts" : [
+                "-Ddesktop_docs=false",
+                "-Ddebug_tools=false"
+            ],
+            "cleanup" : [
+                "/lib/girepository-1.0",
+                "/share/gir-1.0"
+            ],
+            "sources" : [
+                {
+                    "type" : "archive",
+                    "url" : 
"http://ftp.gnome.org/pub/GNOME/sources/gnome-desktop/3.33/gnome-desktop-3.33.4.tar.xz";,
+                    "sha256" : "655639cc5a060b9518c541fdd1d6af7a7765c0f4dab14188b1e1b7dff2a76857"
+                }
+            ]
+        },
         {
             "name" : "evince",
             "buildsystem" : "meson",