Hi PILOU

>> Have you make something for an easy translating ?

I haven't changed the translation process that much, it uses the "lang.js" as a dictionary.
Example: "English Word":"Translated Word",
I think you can translate almost every word you see in the NE plus. ( Except the node tooltips and searchbox )
That includes:
All menus, submenus, node title, node's inputs/outputs label and ui buttons