ui: replace deprecated GTK stock values

lib/solaar/ui/action.py

@@ -67,7 +67,7 @@ def make_toggle(name, label, function, stock_id=None, *args):
 #     action.set_sensitive(notify.available)
 # toggle_notifications = make_toggle('notifications', 'Notifications', _toggle_notifications)
 
-about = make('help-about', _('About') + ' ' + NAME, _show_about_window, stock_id=Gtk.STOCK_ABOUT)
+about = make('help-about', _('About') + ' ' + NAME, _show_about_window, stock_id='help-about')
 
 #
 #
@@ -96,7 +96,7 @@ def unpair(window, device):
         _('Unpair') + ' ' + device.name + ' ?'
     )
     qdialog.set_icon_name('remove')
-    qdialog.add_button(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
+    qdialog.add_button(_('Cancel'), Gtk.ResponseType.CANCEL)
     qdialog.add_button(_('Unpair'), Gtk.ResponseType.ACCEPT)
     choice = qdialog.run()
     qdialog.destroy()

lib/solaar/ui/diversion_rules.py

@@ -136,11 +136,11 @@ class DiversionDialog:
             )
             dialog.set_default_size(400, 100)
             dialog.add_buttons(
-                Gtk.STOCK_YES,
+                _('Yes'),
                 Gtk.ResponseType.YES,
-                Gtk.STOCK_NO,
+                _('No'),
                 Gtk.ResponseType.NO,
-                Gtk.STOCK_CANCEL,
+                _('Cancel'),
                 Gtk.ResponseType.CANCEL,
             )
             dialog.set_markup(_('If you choose No, changes will be lost when Solaar is closed.'))

lib/solaar/ui/tray.py

@@ -65,7 +65,7 @@ def _create_menu(quit_handler):
 
     from .action import about, make
     menu.append(about.create_menu_item())
-    menu.append(make('application-exit', _('Quit'), quit_handler, stock_id=Gtk.STOCK_QUIT).create_menu_item())
+    menu.append(make('application-exit', _('Quit'), quit_handler, stock_id='application-exit').create_menu_item())
     del about, make
 
     menu.show_all()