Merge pull request #7 from ualerts-org/createImplementationOfServiceAPI_ACE-27

Create implementation of service api ace 27
Moved SockJsHandler from service to web tier
Added async-supported to servlet definition in web.xml
Removed debug output from SockJsHandler
- Added code to the addClient method to set a reference to the
conversation
- Removed code from the afterConnectionEstablished method that had a
chatClient setting a conversation reference