[WCM] Question Helper - Showing the default answer

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes - symfony/symfony#11975
| Applies to    | 2.6
| Fixed tickets | 

This is the documentation for a new feature that I am proposing.
I agree with the change to the method names. Thanks for catching this. Though "themself" is correct. It's the gender neutral form of himself/herself. "Therselves" is plural not singular.