Prepared customization to build B2G, with languages like:

• বাংলা (বাংলাদেশ)
• Deutsch
• Ελληνικά
• English (US)
• Español
• Français
• हिन्दी (भारत)
• Magyar
• Italiano
• 日本語
• Polski
• Português (do Brasil)
• Русский
• Svenska
• Türkçe
• 中文 (简体)

And including .userconfig file with build preferences, also a bash scripts to update languages and a personalisation of GAIA since VegnuxMod.

To download languages edit sh scripts variables:

• LANG_DIR --> Is a folder where download GAIA languages
• LANG_VERSION --> Is a GAIA version like B2G, example: v1_2,v1_3,v2_0, etc, master is a last version of B2G
• LANG_LIST --> Is the list of languages to download (also, need add new languages to languages_dev.json file)

Change file permissions:
$> chmod 777 clonar_idiomas.sh

And run:
$> ./clonar_idiomas.sh