Merge pull request #5354 from berendjan/Added_NL_language

Added nl language

Author: kevin-bates

notebook/i18n/README.md

@@ -22,6 +22,8 @@ Hint: if running Windows, you can set it in PowerShell with `${Env:LANG} = "xx_X
 
 ## Contributing and managing translations
 
+Finding and translating the `.pot` files could be (partially) done with a translation API, see the repo [Jupyter Notebook Azure Translator](https://github.com/berendjan/Jupyter-Notebook-Azure-Translator.git) for a possible starting point. (Not affiliated with Jupyter)
+
 ### Requirements
 
 - *pybabel* (could be installed `pip install babel`)
@@ -53,6 +55,8 @@ pybabel extract -F babel_nbjs.cfg -o nbjs.pot --no-wrap --project Jupyter .
 
 After this is complete you have 3 `.pot` files that you can give to a translator for your favorite language.
 
+Finding and translating the `.pot` files could be (partially done with a translation API, see the repo [Jupyter Notebook Azure Translator](https://github.com/berendjan/Jupyter-Notebook-Azure-Translator.git) for a possible starting point. (Not affiliated with Jupyter)
+
 ### Messages compilation
 
 After the source material has been translated, you should have 3 `.po` files with the same base names

notebook/i18n/nbjs.json

@@ -2,7 +2,8 @@
 	"domain": "nbjs",
 	"supported_languages": [
 		"fr-FR",
-		"zh-CN"
+		"zh-CN",
+		"nl"
 	],
 	"locale_data": {
 		"nbjs": {