[[[Portal:Ms|ms-arab]]] Activate new language: Malay (Arabic script) - 'بهاس ملايو'

I'm going to enable it as a full-fledged translation target language in translatewiki. This will make it usable as an interface language in Wikidata, and also as a language for values in Wikidata, but if you want to use it for other content in Wikimedia projects, you'll have to discuss it separately.