Stopped using graphical data structure for parsing graphical2TMLTxt

src/tmltranslator/TMLAttribute.java

src/tmltranslator/TMLCP.java

src/tmltranslator/TMLCPTextSpecification.java

src/tmltranslator/TMLSDAttribute.java

src/tmltranslator/tmlcp/CPSequenceDiagram.java

src/tmltranslator/tmlcp/TMLSDAction.java

src/tmltranslator/tmlcp/TMLSDInstance.java

src/tmltranslator/tmlcp/TMLSDMessage.java

src/ui/GTURTLEModeling.java