Added several actions that were left out while switching to module.

- save copy as
- export
- copy as c string
- copy as raw cpp string

pglab/QueryTool.cpp

@@ -629,3 +629,11 @@ void QueryTool::focusEditor()
 {
 	ui->queryEdit->setFocus();
 }
+
+void QueryTool::exportData()
+{
+	QString home_dir = QStandardPaths::locate(QStandardPaths::HomeLocation, "", QStandardPaths::LocateDirectory);
+	QString file_name = QFileDialog::getSaveFileName(this,
+		tr("Export data"), home_dir, tr("CSV file (*.csv)"));
+	exportData(file_name);
+}