i18next support for druid-kyt-starter

Configuration

The configuration is supplied in i18n key of project-kyt.config.js

|------------------------------|-------|----------------------------------------------------------------------|

Option	Req.	Description
mode	Yes	Mode of operation. Either 'po-file' or 'json-file'.
languages	Yes	Array of allowed languages, e.g. ['fi', 'en'].
defaultLanguage	No	The default language, e.g. 'fi'. If not set, first of languages.
translationsDirectory	Yes	Directory of the translations on disk.
translationsFilenamePattern	Yes	Filename pattern of the translations. E.g. '{{lng}}.{{ns}}.po'
removeDefaultLanguageFromUrl	Yes	Filename pattern of the translations. E.g. '{{lng}}.{{ns}}.po'
middleware	No	Object containing additional config for i18next-express-middleware.
i18next	No	Object containing additional config for i18next.
------------------------------	-------	----------------------------------------------------------------------