[gnome-builder] application: make About dialog modal

[Christian Hergert <chergert src gnome org>]

commit 17a602f197853984b35b5c95e8749d5838947d68
Author: Dimitrios Christidis <dimitrios christidis me>
Date:   Wed Jan 4 15:50:05 2017 +0200

    application: make About dialog modal
    
    This makes Builder consistent with other GNOME applications. Also works
    around a GTK+ bug on Wayland.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776865

 libide/application/ide-application-actions.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/libide/application/ide-application-actions.c b/libide/application/ide-application-actions.c
index 243ae47..c73e1c7 100644
--- a/libide/application/ide-application-actions.c
+++ b/libide/application/ide-application-actions.c
@@ -118,14 +118,13 @@ ide_application_actions_about (GSimpleAction *action,
                          "documenters", ide_application_credits_documenters,
                          "license-type", GTK_LICENSE_GPL_3_0,
                          "logo-icon-name", "org.gnome.Builder",
-                         "modal", FALSE,
+                         "modal", TRUE,
                          "program-name", _("GNOME Builder"),
                          "transient-for", parent,
                          "translator-credits", _("translator-credits"),
                          "version", PACKAGE_VERSION,
                          "website", "https://wiki.gnome.org/Apps/Builder";,
                          "website-label", _("Learn more about GNOME Builder"),
-                         "window-position", GTK_WIN_POS_CENTER,
                          NULL);
   gtk_about_dialog_add_credit_section (GTK_ABOUT_DIALOG (dialog),
                                        _("Funded By"),