lib/foodsoft_current_orders/app/views/current_orders/ordergroups/show.js.erb
// untested
$('h1, title').html('<%= j t('.title', name: @ordergroup.name) %>');
$('#articles_by_groups tbody').replaceWith('<%= j render('articles') %>');
$('#payment_bar').replaceWith('<%= j render('payment_bar') %>');