[GUI][Bug] MnWizard: Fix validators for masternode alias and port

- alias cannot contain spaces or #. But any other character should be
allowed.
- the port number should be fixed per-network. No need to add a
validator there
Github-Pull: #1545
Rebased-From: 0e3c18f

src/qt/pivx/masternodewizarddialog.cpp

@@ -12,6 +12,8 @@
 #include <QFile>
 #include <QIntValidator>
 #include <QHostAddress>
+#include <QRegularExpression>
+#include <QRegularExpressionValidator>
 
 MasterNodeWizardDialog::MasterNodeWizardDialog(WalletModel *model, QWidget *parent) :
     QDialog(parent),
@@ -50,7 +52,9 @@ MasterNodeWizardDialog::MasterNodeWizardDialog(WalletModel *model, QWidget *pare
 
     ui->lineEditName->setPlaceholderText(tr("e.g user_masternode"));
     initCssEditLine(ui->lineEditName);
-    ui->lineEditName->setValidator(new QRegExpValidator(QRegExp("^[A-Za-z0-9]+"), ui->lineEditName));
+    // MN alias must not contain spaces or "#" character
+    QRegularExpression rx("^(?:(?![\\#\\s]).)*");
+    ui->lineEditName->setValidator(new QRegularExpressionValidator(rx, ui->lineEditName));
 
     // Frame 4
     setCssProperty(ui->labelTitle4, "text-title-dialog");
@@ -62,12 +66,10 @@ MasterNodeWizardDialog::MasterNodeWizardDialog(WalletModel *model, QWidget *pare
     initCssEditLine(ui->lineEditIpAddress);
     initCssEditLine(ui->lineEditPort);
     ui->stackedWidget->setCurrentIndex(pos);
-    ui->lineEditPort->setValidator(new QIntValidator(0, 9999999, ui->lineEditPort));
+    ui->lineEditPort->setEnabled(false);    // use default port number
     if (walletModel->isRegTestNetwork()) {
-        ui->lineEditPort->setEnabled(false);
         ui->lineEditPort->setText("51476");
     } else if (walletModel->isTestNetwork()) {
-        ui->lineEditPort->setEnabled(false);
         ui->lineEditPort->setText("51474");
     } else {
         ui->lineEditPort->setText("51472");