Doris Tam authored Dec 08, 2020 and Robert Lyon committed Jun 07, 2021

Set the default language when no preferences have been set to the first language
in the request header Accept-Language where there is a lang pack installed,
otherwise default to en.utf8.

Default string only appears when the current language is not the Accept-Language

Added a method to match lang packs to Accept-Language list

Change-Id: I7ed02c5be10ede0967861cba353bd0fc4ccb650e