ISPC monitor selector Fixes #4729, refinements for progressbars values (left margin when value is too low)

Refactored dashboard and quota usage views. Added quota and usage to Website quota (harddisk) view. Changed progress bars to be consitent through all views.

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

Merged language files.