message: Clear options for old wallet version, write options version to 1
diff: @@ -23,6 +23,12 @@ void OptionsModel::Init()
  {
  QSettings settings;
  + int nSettingsVersion = settings.value("nSettingsVersion", 0).toInt();
  + if (nSettingsVersion < 1) {
  + settings.clear();
  + settings.setValue("nSettingsVersion", 1);
  + }
  +
  // These are Qt-only settings:
  //nDisplayUnit = settings.value("nDisplayUnit", BitcoinUnits::ALIAS).toInt();
  nDisplayUnit = BitcoinUnits::ALIAS;
  