- made optional the saving of an edited object. Now the user can cancel the changes to the object.

- replaced the standard buttons in the QMessageBox's used in the app with custom ones that can have text translated
- updated the POT translation file and the MO/PO files for English and Romanian language

FlatCAMTranslation.py

@@ -86,12 +86,14 @@ def on_language_apply_click(app, restart=False):
         msgbox.setInformativeText("Are you sure do you want to change the current language to %s?" % name.capitalize())
         msgbox.setWindowTitle("Apply Language ...")
         msgbox.setWindowIcon(QtGui.QIcon('share/language32.png'))
-        msgbox.setStandardButtons(QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.Cancel)
-        msgbox.setDefaultButton(QtWidgets.QMessageBox.Yes)
+        bt_yes = msgbox.addButton(_('Yes'), QtWidgets.QMessageBox.YesRole)
+        bt_no = msgbox.addButton(_('No'), QtWidgets.QMessageBox.NoRole)
 
-        response = msgbox.exec_()
+        msgbox.setDefaultButton(bt_yes)
+        msgbox.exec_()
+        response = msgbox.clickedButton()
 
-        if response == QtWidgets.QMessageBox.Cancel:
+        if response == bt_no:
             return
         else:
             settings = QSettings("Open Source", "FlatCAM")