AgaviNotOperatorValidator - Needs to remove any child errors

[ross]

AgaviNotOperatorValidator, should be valid if the child errors.

However, doesn't do any cleaning, so in my action validate function:

$this->container->getValidationManager()->hasErrors();

is True! as the NotOperator Child threw an error.

Added clean up - unfortunately, that means allowing public access to setting the result in the Validation Manager.

Patches incoming...

[ross]

Patch to clean up any child errors

[ross]

Added setResult, so the not validator can clean up any child errors

[david]

changeset:1879 is the first part of a larger fix

[dominik]

(In [1925]) Make the not operator hide all child errors and set the affected fields accordingly closes #495