Timeout & retry for location services

[acdha]

I've noticed that satellite-eyes frequently gets stuck “waiting for location fix” when I wake my laptop from sleep at work, where I have both WiFi (behind a captive portal) and an ethernet interface. This appears to be a race condition – if I wake the laptop without the ethernet cable and then plug it in, everything is fine – but it seems like satellite-eyes should have some reasonable timeout (5 minutes?) for the location query as there's otherwise no way to force an update short of restarting the app.

[tomtaylor]

Yes, this sounds like a bug, but I'd like to fix it by detected changes in network availability, rather than using a timer. I have no time to implement this right now, so patches welcome.