[gnome-todo] flatpak: Install intltool

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8dbbfd68648a9cce353eb48f43feb4f1046cb7f2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Aug 25 16:26:34 2019 +0300

    flatpak: Install intltool
    
    EDS still requires it.

 build-aux/flatpak/org.gnome.Todo.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Todo.json b/build-aux/flatpak/org.gnome.Todo.json
index cda3a3c..2abf480 100644
--- a/build-aux/flatpak/org.gnome.Todo.json
+++ b/build-aux/flatpak/org.gnome.Todo.json
@@ -104,6 +104,17 @@
                 }
             ]
         },
+        {
+            "name" : "intltool",
+            "buildsystem" : "autotools",
+            "sources" : [
+                {
+                    "type" : "archive",
+                    "url" : "https://launchpad.net/intltool/trunk/0.51.0/+download/intltool-0.51.0.tar.gz";,
+                    "sha256" : "67c74d94196b153b774ab9f89b2fa6c6ba79352407037c8c14d5aeb334e959cd"
+                }
+            ]
+        },
         {
             "name" : "evolution-data-server",
             "cleanup": [ "/share/GConf" ],