fix create task

app/mainwindow.cpp

@@ -65,6 +65,7 @@ void MainWindow::on_commandLinkButton_7_clicked()
     QString text = QInputDialog::getText(this, tr("Create task"),
                                          tr("Task command:"), QLineEdit::Normal,
                                          QDir::home().dirName(), &ok);
+    text+=" &";
     if (ok && !text.isEmpty())
         system(text.toStdString().c_str());
 }