removed the last stock gtk binding

juci/config.json

@@ -38,6 +38,7 @@
         "open_file": "<control>o",
 	"save": "<control>s",
 	"save_as": "<control><shift>s",
+        "quit": "<control>q",
        
         "split_window": "<control><alt>s",
 	"close_tab": "<control>w",

juci/window.cc

@@ -16,7 +16,9 @@ Window::Window() :
   set_default_size(600, 400);
   add(window_box_);
   keybindings_.action_group_menu()->add(Gtk::Action::create("FileQuit",
-                                                            Gtk::Stock::QUIT),
+                                                            "Quit juCi++"),
+                                        Gtk::AccelKey(keybindings_.config_
+                                                      .key_map()["quit"]),
                                         [this]() {
                                           OnWindowHide();
                                         });