[gnome-builder] about: use header bar always

[Christian Hergert <chergert src gnome org>]

commit 7bcab762601803f3a07de1422681ab0de4f13a0a
Author: Christian Hergert <chergert redhat com>
Date:   Sun Mar 12 23:29:32 2017 -0700

    about: use header bar always
    
    Apparently we weren't using the headerbar on Ubuntu with their window
    manager. This should fix that.

 libide/application/ide-application-actions.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libide/application/ide-application-actions.c b/libide/application/ide-application-actions.c
index a276447..2249e17 100644
--- a/libide/application/ide-application-actions.c
+++ b/libide/application/ide-application-actions.c
@@ -135,6 +135,7 @@ ide_application_actions_about (GSimpleAction *action,
                          "program-name", _("GNOME Builder"),
                          "transient-for", parent,
                          "translator-credits", _("translator-credits"),
+                         "use-header-bar", TRUE,
                          "version", version->str,
                          "website", "https://wiki.gnome.org/Apps/Builder";,
                          "website-label", _("Learn more about GNOME Builder"),