message: [GUI][Trivial] Emphasize warning in askpassphrasedialog
  Make WARNING text capitalized and bold
diff: @@ -183,7 +183,8 @@ void AskPassphraseDialog::accept()
  hide();
  bool ret = openStandardDialog(
  tr("Confirm wallet encryption"),
  - tr("Warning: If you encrypt your wallet and lose your passphrase, you will <b>LOSE ALL OF YOUR PIV</b>!") + "<br><br>" + tr("Are you sure you wish to encrypt your wallet?"),
  + "<b>" + tr("WARNING") + ":</b> " + tr("If you encrypt your wallet and lose your passphrase, you will") +
  + " <b>" + tr("LOSE ALL OF YOUR PIV") + "</b>!<br><br>" + tr("Are you sure you wish to encrypt your wallet?"),
  tr("ENCRYPT"), tr("CANCEL")
  );
  if (ret) {
  @@ -271,7 +272,7 @@ bool AskPassphraseDialog::event(QEvent* event)
  if (ke->key() == Qt::Key_CapsLock) {
  fCapsLock = !fCapsLock;
  ui->capsLabel->setVisible(fCapsLock);
  - fCapsLock ? ui->capsLabel->setText(tr("Warning: The Caps Lock key is on!")) : ui->capsLabel->clear();
  + fCapsLock ? ui->capsLabel->setText(tr("WARNING: The Caps Lock key is on!")) : ui->capsLabel->clear();
  }
  // Detect Enter key press
  if ((ke->key() == Qt::Key_Enter || ke->key() == Qt::Key_Return) && ui->pushButtonOk->isEnabled()) {
  @@ -297,7 +298,7 @@ bool AskPassphraseDialog::eventFilter(QObject* object, QEvent* event)
  bool fShift = (ke->modifiers() & Qt::ShiftModifier) != 0;
  if ((fShift && *psz >= 'a' && *psz <= 'z') || (!fShift && *psz >= 'A' && *psz <= 'Z')) {
  fCapsLock = true;
  - ui->capsLabel->setText(tr("Warning: The Caps Lock key is on!"));
  + ui->capsLabel->setText(tr("WARNING: The Caps Lock key is on!"));
  ui->capsLabel->setVisible(true);
  } else if (psz->isLetter()) {
  fCapsLock = false;
  