QPID-5957: [Java Broker] Extend the Session model object to expose transaction start and update times

* Expose the same information on the Connection tab within the Web Management UI.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1615424 13f79535-47bb-0310-9956-ffa450edef68
QPID-5958: [Java Broker] Wire up the Connection#remoteProcessPid attribute to the client's process identifier made
available as connection properties during connection negotiation.

* Make information available via the Connection tab during the Web Management UI.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1615425 13f79535-47bb-0310-9956-ffa450edef68