Add javadocs, fix setWrappedErrorCallback to reset given null, and add
scope.
Add JAX-RS description to Errai Security docs, update demo to match docs
usage.
Document the form based login and the UserCookieEncoder.
Document usage of Element in style binding methods.
Move form-based-login documentation to "Alternative to Picketlink"
section.
Fix for mockito @InjectMocks confusion that causes all tests to fail under JDK7.