Element editor : Workaround for Qt::Key_Space event not working

Use of ALT key as a replacement to rotate terminal on the fly before
placing it in the drawing.
Fix bug #262
https://qelectrotech.org/bugtracker/view.php?id=262

sources/editor/esevent/eseventaddterminal.cpp

@@ -87,7 +87,8 @@ bool ESEventAddTerminal::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
 	@return
 */
 bool ESEventAddTerminal::keyPressEvent(QKeyEvent *event) {
-	if (event -> key() == Qt::Key_Space) {
+	if (event -> key() == Qt::Key_Alt) {
+	
 		switch (m_terminal->orientation()) {
 			case Qet::North :
 				m_terminal -> setOrientation(Qet::East);