Merge branch 'release/2.3.1'

...tor/observer/wizard/WizardObserverCSwitchCoordinates.java

...itor/observer/wizard/WizardObserverDeleteItemsAction.java

...ef/editor/observer/wizard/WizardObserverDragListener.java

...ef/editor/observer/wizard/WizardObserverDropListener.java

...rver/wizard/WizardObserverListenOperationByPredicate.java

...ef/editor/observer/wizard/WizardObserverSetAttribute.java

...itor/observer/wizard/WizardObserverSwitchCoordinates.java

...gef/editor/observer/wizard/WizardObserverSwitchImage.java

...itor/src/de/bmotionstudio/gef/editor/part/BImagePart.java

.../de/bmotionstudio/gef/editor/util/WizardObserverUtil.java

de.bmotionstudio.rodin/META-INF/MANIFEST.MF

de.prob.core/.classpath

de.prob.core/META-INF/MANIFEST.MF

de.prob.core/build.properties

de.prob.core/lib/probcliparser.jar

de.prob.core/prob/linux/build_info.txt

de.prob.core/prob/linux/lib/graphiso.so

de.prob.core/prob/linux/lib/ltlc.so

de.prob.core/prob/linux/lib/user_signal.so

de.prob.core/prob/linux/probcli