FIX unhardwire 'modDate' to easy support for 'creDate'
FIX proper support of creDate and modDate in context element creation and modification
FIX backward compatibility for modDate and creDate previous fixes
FIX reasonPhrase messages in test harness
FIX failing test harness
FIX broken unit tests
ADD entry for changes next release
FIX issue raised in code review
FIX code review issues
Merge pull request #184 from telefonicaid/bug/182

Proper processing of modDate and creDate