Device Detail: High-domain heuristic for phone/computer/tablet

[crazyideas21]

If distinct registered domains > 15 in 24 h, flag device as potential phone/computer. Hide raw hostnames; prompt user to take device offline 2 min then back online to verify ownership.

[crazyideas21]

Pending @Rameen-Mahmood 's dev-id API to tell us if a device is likely a computer/phone/tablet. If so, Inspector will automatically disable showing details of this device for privacy reasons. If user still wants to see details, they'll have to prove ownership of the said device.