Use full language names for selector instead of language shortcodes

[wkmor1]

Have added "lang" data to the locale files

[wkmor1]

{
  "ar": "العربية",
  "de": "Deutsch",
  "en": "English",
  "es": "Español",
  "fi": "suomi",
  "fr": "français",
  "hu": "magyar",
  "it": "Italiano",
  "ja": "日本語",
  "kn": "ಕನ್ನಡ",
  "mr": "मराठी",
  "nl": "Nederlands",
  "pt-BR": "Português brasileiro",
  "pt-PT": "Português europeu",
  "ru": "русский",
  "sw": "Kiswahili",
  "zh": "中文"
}

These are the currently implemented locales. Not sure where in the app this object should go.