When a website has no data tracked yet, we show a page inviting user to paste the code on their websites: https://github.com/piwik/piwik-ui-tests/blob/master/EmptySite_emptySiteDashboard.png #7365 #7170
Proposal: as soon as a user has then collected some data, we could maybe display a one-off notification with a message eg.
Congratulations! Data has been tracked in your Piwik. We hope you gain a lot of insights with your data. Happy analytics!
or something better...
About this notification: