Alert mode

[johnbillion]

I'm thinking that once I've addressed all (or most) of the reported CSP violations on a site, I'd like to crank up the sampling frequency and then leave the plugin active. That way, any sneakily hidden violations will get reported.

I don't want to keep checking the CSP Reports admin menu though. It would be nice to switch on an alert mode, which adds an hourly cron event which checks for new violations within the last hour and sends an email alert letting me know there are new violations that I should take a look at.

[tollmanz]

Fantastic idea. Let's do it.