When a stolen bike QR code is scanned, send alert

[sethherr]

When a bike marked stolen has its QR code scanned, send a geolocated message to the owner.

[sethherr]

Way I can see to add this functionality, trying to get the location but still sending an email (perhaps including the user's ip address?) if we don't manage to get the location:

• If it's scanned, enqueue an email in a minute or two. If in a minute or two, when the job runs, we haven't sent an email about the bike recently, send the email
• Ask the user for location permission when the page loads
• If we get geolocated permission, send an email (silently, in the background via API or something)