** Added initial support for websockets
** Moved CoOpsPatchEvent under events package
** Added new CDI events for session open and close
** Added method for listing sessions by accessed, type and closed (can
be used to identify timed out sessions)
** Added session event bean to represent a session event extension entry
** Added session events controller
** Refactored session handling into CoOpsSessionController
** Added some basic ui (based on bootstrap)