[shotwell/shotwell-0.26] Disable minimize button on Unity

[Jens Georg <jensgeorg src gnome org>]

commit c01a8b79df0f10b5d206b70d508c322c830962ac
Author: Jens Georg <mail jensge org>
Date:   Fri Mar 24 19:47:52 2017 +0100

    Disable minimize button on Unity
    
    Signed-off-by: Jens Georg <mail jensge org>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=719240

 src/publishing/PublishingUI.vala |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/publishing/PublishingUI.vala b/src/publishing/PublishingUI.vala
index 91a2bf4..c975564 100644
--- a/src/publishing/PublishingUI.vala
+++ b/src/publishing/PublishingUI.vala
@@ -168,6 +168,8 @@ public class PublishingDialog : Gtk.Dialog {
             ((Gtk.HeaderBar) get_header_bar()).set_show_close_button(false);
 
         resizable = false;
+        modal = true;
+        set_transient_for(AppWindow.get_instance());
         delete_event.connect(on_window_close);
 
         publishables = new Spit.Publishing.Publishable[0];