[gnome-2048/app-menu: 1/5] Add some more shortcuts for the about dialog.

[Arnaud B. <arnaudb src gnome org>]

commit 5f2e357da12469daa6c03fe5e0cb888736d2da00
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Tue Jan 8 15:31:58 2019 +0100

    Add some more shortcuts for the about dialog.

 src/application.vala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/application.vala b/src/application.vala
index 9d3838c..1577037 100644
--- a/src/application.vala
+++ b/src/application.vala
@@ -134,7 +134,9 @@ public class Application : Gtk.Application
         _create_scores ();
 
         set_accels_for_action ("app.new-game",  {        "<Primary>n"   });
-        set_accels_for_action ("app.about",     { "<Shift><Primary>F1"  });
+        set_accels_for_action ("app.about",     { "<Shift><Primary>F1",
+                                                         "<Primary>F1",
+                                                           "<Shift>F1"  });
 
         _window.show_all ();