* add a replace_breadcrumb option to actionmanager * correctly calls on_reverse_breadcrumbs when needed * add a semi-protected way to manipulate breadcrumbs (get_widgets) * calls do_show when changing widgets
* add a replace_breadcrumb option to actionmanager * correctly calls on_reverse_breadcrumbs when needed * add a semi-protected way to manipulate breadcrumbs (get_widgets) * calls do_show when changing widgets