message: Style consistency.
diff: @@ -529,7 +529,8 @@ void MainUI::closeEvent(QCloseEvent *ev){
  this,
  tr("Save Changes before closing?"),
  QString(tr("There are unsaved changes.\nDo you want save them before you close the editor?\n\n%1")).arg(unsaved.join("\n")),
  - QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel, QMessageBox::No);
  + QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel,
  + QMessageBox::No);
  if(but == QMessageBox::Cancel){
  ev->ignore();
  