Redesign admin accounts index (#9340)

* Improve overview of accounts in admin UI

- Display suspended status, role, last activity and IP prominently
- Default to showing local accounts
- Default to not showing suspended accounts

* Remove unused strings

* Fix tests

* Allow filtering accounts by IP mask

config/locales/gl.yml

@@ -123,10 +123,6 @@ gl:
       most_recent_ip: IP máis recente
       no_limits_imposed: Sen límites impostos
       not_subscribed: Non suscrita
-      order:
-        alphabetic: Alfabética
-        most_recent: Máis recente
-        title: Orde
       outbox_url: URL caixa de saída
       perform_full_suspension: Suspender
       profile_url: URL do perfil