Show a visual ping on the map when a device publishes an update

[coderbyheart]

Show a visual ping on the map everytime a device sends in data to make the map even more impressive. This would also help customers easier debug whether their device is sending in data when they expect it.

Note: since this can have some performance impact doing this for for the map I could only sent the signal that there was an update but for a device. Only if a specific device is favorited, real-time notifications for all objects (or selected) are enabled for a specific device.