applications/platforn/designer/src:
* CInterfacedScenario : added display of message link and ability to connect when in Mode_Connect thanks to the connectMessage of CScenario
kernel/src/kernel/scenario:
* CScenario : added functions to manage the message links (copy of the functions managing links) and the connectMessage function (copy of connect specific to message links)
openvibe/include/openvibe/kernel/scenario:
* ovIScenario : added functions to manages message links
plugins/processing/file-io/src/algorithms/xml-scenario :
* CAlgorithmXMLScenario Exporter/Importer
toolkit/src/algorithms/scenario-io:
* CAlgorithmScenario Importer/Exporter : modified to support message links nodes in XML senarios files
toolkit/include/toolkit/algorithms/scenario-io:
* ovtk_scenario_io.h : added identifiers for message links, its source, target, attributes, ... (every identifiers needed by links have a copy for message links)