implement some agent-interface exchange
param of event_type_contenur is an elementmodel
Merge branch 'master' of https://github.com/paillardf/Work-Hub

Conflicts:
	Work-Hub-MainLib/src/com/workhub/jade/agent/ClientAgent.java

Work-Hub-MainLib/src/com/workhub/jade/behaviour/ContentClientBehaviour.j
ava
	Work-Hub-MainLib/src/com/workhub/utils/Constants.java