improve ChangePref() and TokenScanWizard()
improve ChangePref() and TokenScanWizard()

ChangePref will now try to use .PubliAddress and 127.0.0.1 as fallback if Network.Address is None.

Add verbose debug messages to the TokenScanWizard.

Signed-off-by: René Köcher <54a2f31bce2142bc2d6fa10cef6a7efcccf6c4c2@bitspin.org>

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