[gnome-boxes] Mark comments string in About dialog as translatable and add translation-credits

[Piotr DrÄg <piotrdrag src gnome org>]

commit 5672e765a5cf15535e66223894356ffc6e718f74
Author: Piotr DrÄg <piotrdrag gmail com>
Date:   Wed Jan 18 20:51:29 2012 +0100

    Mark comments string in About dialog as translatable and add translation-credits

 src/app.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/app.vala b/src/app.vala
index 57837d3..83715af 100644
--- a/src/app.vala
+++ b/src/app.vala
@@ -86,7 +86,8 @@ private class Boxes.App: Boxes.UI {
             Gtk.show_about_dialog (window,
                                    "artists", artists,
                                    "authors", authors,
-                                   "comments", "A simple GNOME 3 application to access remote or virtual systems",
+                                   "translator-credits", _("translator-credits"),
+                                   "comments", _("A simple GNOME 3 application to access remote or virtual systems"),
                                    "copyright", "Copyright 2011 Red Hat, Inc.",
                                    "license-type", Gtk.License.LGPL_2_1,
                                    "logo-icon-name", "gnome-boxes",