Step one:
set the environment correctly: set LANG=de-DE
(it looks like npm does not catch my windows language settings correctly)
now it uses the messages from runtime/locales/de/runtime.json
Willkommen bei Node-RED
1 Dec 10:05:55 - [info] Node-RED Version: v0.19.5-git
1 Dec 10:05:55 - [info] Node.js Version: v6.10.3
1 Dec 10:05:55 - [info] Windows_NT 6.1.7601 x64 LE
1 Dec 10:06:00 - [info] Palettenknoten werden geladen
1 Dec 10:06:07 - [warn] rpi-gpio : Raspberry Pi-spezifischer Knotenset inaktiv
1 Dec 10:06:15 - [info] Dashboard version 2.10.0 started at /ui
1 Dec 10:06:15 - [warn] ------------------------------------------------------
1 Dec 10:06:15 - [warn] [node-red/tail] Wird derzeit unter Windows nicht unterstützt.
1 Dec 10:06:15 - [warn] ------------------------------------------------------
1 Dec 10:06:15 - [info] Einstellungsdatei: C:\Users\xx.node-red\settings.js
1 Dec 10:06:15 - [info] Kontextspeicher: 'default' [ module=memory]
1 Dec 10:06:15 - [info] Benutzerverzeichnis: C:\Users\xx.node-red
1 Dec 10:06:15 - [warn] Projekte inaktiviert: setze editorTheme.projects.enabled=true zum Aktivieren
1 Dec 10:06:15 - [info] Flow-Datei: C:\Users\xx.node-red\flows_xx.json
1 Dec 10:06:15 - [warn]
