Merge pull request #17 from sotty/master

Improve agent disposal
DialogueHelper:
	- Code cleanup and refactor.
	- Implemented the following timeouts:
		* WSDL Retrieval timeout (when the class is created)
		* Connection timeout for each WS invocation
		* Receive timeout for each WS invocation
Merge pull request #18 from esteban-aliverti/master

DialogueHelper Timeouts implementation
DialogueHelper:
	- Service invocation is always performed async.
	- Possibility to register a callback for each service invocation.
Merge pull request #19 from esteban-aliverti/master

Async DialogueHelper
DialogueHelper:
	- Implemented invokeQueryRef()
DialogueHelper:
	- Added more logs
	- TimeoutException if the responses don't arrive
- Improved Messages ids for concurrent scenarios
Merge pull request #20 from esteban-aliverti/master

DialogueHelper improvements
MAS : Use 5.5.0.Final