Advances on mapping

src/main/java/tmltranslator/TMLArchitecture.java

src/main/java/tmltranslator/TMLChannel.java

src/main/java/tmltranslator/TMLCommunicationElement.java

src/main/java/tmltranslator/TMLEvent.java

src/main/java/tmltranslator/TMLMapping.java

src/main/java/tmltranslator/TMLRequest.java