Merge branch 'minh-issue-186' into 'master'

modeling/DIPLODOCUS/CloneCompositeComponentTest.xml

src/main/java/ui/GTURTLEModeling.java

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/TGComponent.java

src/main/java/ui/TGConnector.java

ttool/src/test/java/ui/TDiagramPanelCloneTest.java

.../test/resources/tmltranslator/expected/expected_spec1.tml

.../test/resources/tmltranslator/expected/expected_spec2.tml

.../test/resources/tmltranslator/expected/expected_spec3.tml

...rces/ui/diagram2tml/input/CloneCompositeComponentTest.xml