add preferredLanguage
add preferredLanguage

This stops the flashing of `Header.About` etc and will just provide the English equivalent until translations are ready.
DestinyItemManager/DIM,DestinyItemManager/DIM,chrisfried/DIM,48klocs/DIM,48klocs/DIM,chrisfried/DIM,delphiactual/DIM,48klocs/DIM,delphiactual/DIM,bhollis/DIM,bhollis/DIM,DestinyItemManager/DIM,bhollis/DIM,chrisfried/DIM,delphiactual/DIM,chrisfried/DIM,bhollis/DIM,delphiactual/DIM,DestinyItemManager/DIM