Support to last login feature

conf/locale/locale_en-US.ini

@@ -950,6 +950,8 @@ users.activated = Activated
 users.admin = Admin
 users.repos = Repos
 users.created = Created
+users.last_login = Last Login
+users.never_login = Never Login
 users.send_register_notify = Send Registration Notification To User
 users.new_success = New account '%s' has been created successfully.
 users.edit = Edit