Account edit input improvement

[RiccardoM]

Feature description

Currently when editing the account, the users can do two things:

1. leave any field as it is
2. change the field value

If they choose the second option, then in order to rollback the changes they would have to type the original value by hand. This can become stressing on long text fields such as the biography field.

Implementation proposal

I think a nice way to fix this UX problem is to add an X button at the end of the input that allows users to roll back the value of such input to its original status. In this case the users could:

1. Write any value they want inside the field.
2. Save the new value, OR
3. Press the X button to undo the changes