message: qt: Improve URI/file handling message
  This change:
  fixes missing spaces after full stops
  makes translation context bigger
diff: @@ -235,9 +235,9 @@ void PaymentServer::handleURIOrFile(const QString& s)
  if (!IsValidDestinationString(recipient.address.toStdString())) {
  if (uri.hasQueryItem("r")) { // payment request
  Q_EMIT message(tr("URI handling"),
  - tr("Cannot process payment request because BIP70 is not supported.")+
  - tr("Due to widespread security flaws in BIP70 it's strongly recommended that any merchant instructions to switch wallets be ignored.")+
  - tr("If you are receiving this error you should request the merchant provide a BIP21 compatible URI."),
  + tr("Cannot process payment request because BIP70 is not supported.\n"
  + "Due to widespread security flaws in BIP70 it's strongly recommended that any merchant instructions to switch wallets be ignored.\n"
  + "If you are receiving this error you should request the merchant provide a BIP21 compatible URI."),
  CClientUIInterface::ICON_WARNING);
  }
  Q_EMIT message(tr("URI handling"), tr("Invalid payment address %1").arg(recipient.address),
  @@ -258,9 +258,9 @@ void PaymentServer::handleURIOrFile(const QString& s)
  if (QFile::exists(s)) // payment request file
  {
  Q_EMIT message(tr("Payment request file handling"),
  - tr("Cannot process payment request because BIP70 is not supported.")+
  - tr("Due to widespread security flaws in BIP70 it's strongly recommended that any merchant instructions to switch wallets be ignored.")+
  - tr("If you are receiving this error you should request the merchant provide a BIP21 compatible URI."),
  + tr("Cannot process payment request because BIP70 is not supported.\n"
  + "Due to widespread security flaws in BIP70 it's strongly recommended that any merchant instructions to switch wallets be ignored.\n"
  + "If you are receiving this error you should request the merchant provide a BIP21 compatible URI."),
  CClientUIInterface::ICON_WARNING);
  }
  }
  