Add more detail when logging to console for estimated gas price from Etherscan-like API

AlphaWallet/Transfer/Controllers/GasPriceEstimator.swift

@@ -62,7 +62,7 @@ final class GasPriceEstimator {
         return firstly {
             EtherscanGasPriceEstimator().fetch(server: server)
         }.get { estimates in
-            infoLog("Estimated gas price with gas price estimator API: \(estimates)")
+            infoLog("Estimated gas price with gas price estimator API server: \(server) estimate: \(estimates)")
         }.map { estimates in
             GasEstimates(standard: BigInt(estimates.standard), others: [
                 TransactionConfigurationType.slow: BigInt(estimates.slow),