message: qt: ensure seperator when adding third-party transaction links
  This ensures that if we're going to add an action to open up
  a transaction in a third-party link (block explorer) that it
  is seperated into it's own section.
diff: @@ -223,14 +223,17 @@ void TransactionView::setModel(WalletModel *_model)
  {
  // Add third party transaction URLs to context menu
  QStringList listUrls = GUIUtil::SplitSkipEmptyParts(_model->getOptionsModel()->getThirdPartyTxUrls(), "|");
  + bool actions_created = false;
  for (int i = 0; i < listUrls.size(); ++i)
  {
  QString url = listUrls[i].trimmed();
  QString host = QUrl(url, QUrl::StrictMode).host();
  if (!host.isEmpty())
  {
  - if (i == 0)
  + if (!actions_created) {
  contextMenu->addSeparator();
  + actions_created = true;
  + }
  /*: Transactions table context menu action to show the
  selected transaction in a third-party block explorer.
  %1 is a stand-in argument for the URL of the explorer. */
  