Setup the applets in the constructed stage instead of init
Calling gp_applet_setup_menu_from_resource()
from init causes that the right click menu remains untranslated, because libgnome-panel cannot set the gettext domain at that stage.
Calling gp_applet_setup_menu_from_resource()
from init causes that the right click menu remains untranslated, because libgnome-panel cannot set the gettext domain at that stage.