Use GioNetworkMonitor connectivity property
Submitted by Damián Nohales
Link to original bug (#741341)
Description
GIO has recently added support to know if user network can actually reach the Internet, through GioNetworkMonitor connectivity property [1]. Maybe we could use this property to check if we have Internet connection in Maps instead of checking if we have connection to OSM.
This will simplify the code and maybe we can have a more efficient startup (by not showing the initial spinner for a long period of time waiting for initial connection to OSM).