(feat/monitor): Make ALLOW_SIGN_UP configurable via the chart #8
Description
From @lachie83 on February 7, 2017 23:52
This is to toggle the signup page on the grafana login screen
https://github.com/deis/monitor/blob/master/grafana/rootfs/usr/share/grafana/grafana.ini.tpl#L150
Copied from original issue: deis/monitor#176