Nice and tiny addon Puntuado con 4 de 5 estrellas

But it needs some additons.
The non-advanced user doesn't know - to return to default settings or to leave as they are and he may afraid to return to default - what happen if it will cause some unexpected behavior?
So, it is highly desired to be able to undo the last settings, done by this guard - we need the button or item in tools to call this addon and this addon should have the button "Undo last changes" with list of them and checkboxes in dialog window.

Please file an issue

Thank you for your comments. However, I don't quite understand what your suggestions for improvement are. Could you please file an issue here: https://github.com/mozilla/Firefox-Shield/issues ? I think it'll be easier to have a discussion there and figure out how we can improve this extension.

Thanks!