It dosn't work...
It translates menu into different languages, but the "first" menu (in italian) gives errors, ad example it shows pages sorted alphabetical, not following the order I gave them...and an item (a category archive) is not shown at all.
I tried to crate different menus (menu_it, menu_en ...) and assigning them to them relative language in Appareance-->Menu, but it doesn't wotk too...
I don't understand what is the "main" name of the menu I should declare in registration.
You, Choubly, wrote
register_nav_menu( 'primary', __( 'Primary Menu', 'webello' ) );
In "Primary Menu" do I have to write the name I gave to my menu?