Implements a colored background if bind fails to load the zone due to errors
Implements a status text if errors occured
Implements not removing a zone if errors occur. instead old zone stays loaded

Shows last ip that was used to login successfully with this useraccount.
Logins from admins using loginAs are ignored

Implementiert Issue #4357
Zeigt die IP-Adresse des letzten erfolgreichen Logins auf dem Dashboard an.
Verändert die gespeicherte IP-Adresse nicht, wenn man sich via "Einloggen als" angemeldet hat.

Needed Database-Changes:

ALTER TABLE `sys_user` ADD `last_login_ip` VARCHAR(50) NULL AFTER `lost_password_reqtime`;
ALTER TABLE `sys_user` ADD `last_login_at` BIGINT(20) NULL AFTER `last_login_ip`;

Tested/Working on Ubuntu 16.04 LTS

Update language_edit.htm: add col-sm-3 to label-tag so that the language key is on the left side instead of the right side with all other keys.

i just added a proposed code on howtoforge
https://www.howtoforge.com/community/threads/create-delete-secondary-dns-with-remote-api.74136/