Replaced i18n.t w/ tpl in v2/settings.js (#13504)
Replaced i18n.t w/ tpl in v2/settings.js (#13504)

refs: TryGhost#13380

- The i18n package is deprecated. It is being replaced with the tpl package.
TryGhost/Ghost,e10/Ghost,janvt/Ghost,ErisDS/Ghost,e10/Ghost,TryGhost/Ghost,janvt/Ghost,ErisDS/Ghost,ErisDS/Ghost,TryGhost/Ghost