fix for MNK-5589

git-svn-id: http://svn.terracotta.org/svn/ehcache@8245 b9324663-ca0f-0410-8574-be9b3887307d
ENG-311 : we are not integrating Server Sent Events in the ehcache-rest-agent just yet; the previous commit adding jetty-eventsource-servlet should not have happened

git-svn-id: http://svn.terracotta.org/svn/ehcache@8246 b9324663-ca0f-0410-8574-be9b3887307d