Farmerbot "Dedicated" logic doesn't match Dashboard

[scottyeager]

The farmerbot displays the "Dedicated" status of nodes in the report table outputted in the logs. This logic appears to be used to determine the value that is shown:

tfgrid-sdk-go/farmerbot/internal/state.go

Lines 125 to 127 in aeab47f

	if price != 0 || dedicatedFarm {
	configNode.dedicated = true
	}

Users of the farmerbot have noticed that this doesn't match the notion of "Dedicated" as reported by the Dashboard. In the Dashboard, the "Dedicated" status is returned by grid proxy. Any node that is either rented as dedicated or rentable is labeled "Dedicated".

I think the farmerbot should use the same logic as the grid proxy. Namely, that the node either has a rent contract or has no active node contracts.