Android should return BCP47 tag, not localized string
getLocale,getLanguage, and docs
CB-4602 CB-6490 CB-4822 WP Globalization

BCP-47 compliance for getLocaleName, getPreferredLanguage.
CB-4602 Added clarification to docs
Merge branch 'CB-4602wp' of https://github.com/stacic/cordova-plugin-globalization