Fix piwik metrics reporting

[kewisch]

Bug Description

events.canonical.com has the piwik plugin installed, however it does not seem like metrics are set up correctly since all values are zero. This might be as simple as fixing the configuration, but I didn't want to mess around with it as I don't know the right URLs and tokens:

https://events.canonical.com/admin/plugins/piwik/

To Reproduce

Visit https://events.canonical.com/event/2/manage/statistics/

Environment

events.canonical.com

Relevant log output

none

Additional context

No response

[kewisch]

We need this at latest when we have the Ubuntu Summit site up, but it would be good to test this prior with an event like the upcoming sprint.

[arturo-seijas]

As spoken, you'd need a Piwik server to ingest a retrieve the metrics. I'm closing this ticket as no changes in Indico will be needed