Zabbix

.......... [ZBXNEXT-4769] updated to latest master; resolved conflicts in:
- ui/widgets/svggraph/includes/CSvgGraphHelper.php
- ui/assets/styles/hc-light.css
- ui/assets/styles/hc-dark.css
- ui/assets/styles/dark-theme.cs
- ui/assets/styles/dark-classic-theme.css
- ui/assets/styles/blue-theme.css
- ui/assets/styles/blue-classic-theme.css