It is known, that browser do not send anything for unchecked checkoxes -
thus webwork in current state can not actively set "false" value to boolean fields
represented by checkbox.

This is a problem, when domain objects are not instantiated by action itself,
but loaded from somewhere else with already present state ( for example from database
via hibernate )


Proposed solution for this problem

1. Enhance simple checkbox template to provide marker false value
2. Provide additional interceptor taking care of marker values

Patches ( while files actually, as I use custom version ) are attached