Change authication manager API
Use changed authenticator API
 Move credentials validation code to credentials class
Move validation code to credentials class
Rename credentials class
Move classes to person package
Remove unused classes
Change plugin version
Fix tests
Fix test
Rename some acceptance tests
First Spring WEBMVC test
Add integration test for conversations
Add link to conversations
Change paymets integration test set up method
Add jetty modules
Clean up root POM
Change app server from grizzly to jetty
Change message resource to return created message entity
Move to Jersey 2