Blynk app needs to remember connection name and IP:Port for sync

[gillspice]

Ideally, on sync, all the settings from the app could be updated to the server. Currently, since the connection name and IP:Port are set as labels in the app they can not be read back in order to sync. I think the way to solve this would be to add dummy virtual pins (that don't have corresponding widgets in the app) that are used just to store this information, that way the dummy pins can be read to properly sync.

[rbultman]

Why not just store everything on the pi and write all of the settings to the cloud when Blynk connects? I see the pi as the source of truth, not the app.