[Web] Fix quarantine view and add missing lang string

data/web/lang/lang.de.json

@@ -218,6 +218,8 @@
         "session_ua": "Formular-Token ungültig: User-Agent-Validierungsfehler"
     },
     "user": {
+        "last_mail_login": "Letzter Mail-Login",
+        "no_last_login": "Keine letzte UI Anmeldung gespeichert",
         "generate": "generieren",
         "apple_connection_profile": "Apple Verbindungsprofil",
         "apple_connection_profile_mailonly": "Dieses Verbindungsprofil beinhaltet IMAP und SMTP Konfigurationen für ein Apple Gerät.",

data/web/lang/lang.en.json

@@ -218,6 +218,8 @@
         "ip_invalid": "Skipped invalid IP: %s"
     },
     "user": {
+        "no_last_login": "No last UI login information",
+        "last_mail_login": "Last mail login",
         "apple_connection_profile": "Apple connection profile",
         "apple_connection_profile_mailonly": "This connection profile includes IMAP and SMTP configuration parameters for an Apple device.",
         "apple_connection_profile_complete": "This connection profile includes IMAP and SMTP parameters as well as CalDAV (calendars) and CardDAV (contacts) pathes for an Apple device.",

data/web/lang/lang.ru.json

@@ -821,6 +821,7 @@
     "yubi_otp": "Yubico OTP аутентификация"
   },
   "user": {
+    "last_mail_login": "Последний вход",
     "action": "Действия",
     "active": "Активный",
     "active_sieve": "Включенные фильтры",