Feature request: Live overlay

[amilopowers]

I would it find useful if we had an optional map overlay in the app. So that we can see where we have to scan on the go. I find it kind of annoying to check the map at home before scanning. When I walk home from the train station I would often make a little detour to scan unscanned areas but without a live map it isn't really possible. Mozilla Stumbler shows you which areas have been scanned yet so you can focus on others and it would be great if we had that as well.

I think this should be possible once the online map updates cell scans automatically.