Workgroup now accepts AgentSession status change.

Upon the changing of an agents presence, the workgroup sends back an error message notifying the user that the status could not be set.

SEVERE:
No response from server on status set.:
at com.jivesoftware.smack.workgroup.agent.AgentSession.setStatus(Unknown
Source)
at com.jivesoftware.fastpath.workspace.Workpane$PresenceChangeListener.p
resenceChanged(Workpane.java:790)
at org.jivesoftware.spark.SessionManager.changePresence(SessionManager.j
ava:208)
at org.jivesoftware.spark.ui.status.StatusBar$3$1.construct(StatusBar.ja
va:175)
at org.jivesoftware.spark.util.SwingWorker$2.run(SwingWorker.java:129)
at java.lang.Thread.run(Unknown Source)