added port terminal (eln)

src/main/java/ui/TDiagramPanel.java

src/main/java/ui/eln/ELNComponent.java

src/main/java/ui/eln/ELNConnectingPoint.java

src/main/java/ui/eln/ELNPortTerminal.java

src/main/java/ui/eln/sca_eln/ELNComponentCapacitor.java

.../ui/eln/sca_eln/ELNComponentIndependentCurrentSource.java

.../ui/eln/sca_eln/ELNComponentIndependentVoltageSource.java

src/main/java/ui/eln/sca_eln/ELNComponentInductor.java

src/main/java/ui/eln/sca_eln/ELNComponentNodeRef.java

src/main/java/ui/eln/sca_eln/ELNComponentResistor.java

src/main/java/ui/syscams/SysCAMSCompositeComponent.java

src/main/java/ui/window/JDialogELNPortTerminal.java