Grafana version : 4.6.0  Datasource : Zabbix (Plugin from https://github.com/alexanderzobnin/grafana-zabbix)  OS : Ubuntu 14.04  Hello! I’m still in the process of learning how to handle grafana properly and I’m at the point I need some help.  I’m pulling from Zabbix an epoch timestamp in seconds, which is easier to handle with triggers than string dates, in a Singlestat panel.  The problem is that I need grafana to show a human readable date, whatever the format is (need year, month, day, hour,...