added hidden attributes in component (eln)

src/main/java/ui/ActionPerformer.java

src/main/java/ui/MainGUI.java

src/main/java/ui/TGUIAction.java

src/main/java/ui/eln/ELNDiagramToolBar.java

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

...ain/java/ui/eln/sca_eln/ELNComponentIdealTransformer.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

...ain/java/ui/eln/sca_eln/ELNComponentTransmissionLine.java

...n/sca_eln/ELNComponentVoltageControlledCurrentSource.java

...n/sca_eln/ELNComponentVoltageControlledVoltageSource.java