Implemented the check of client (TOKEN_NOT_OWNED error)

pom.xml

...ava/fr/ill/ics/nscclient/command/CommandZoneAccessor.java

...fr/ill/ics/nscclient/commandline/CommandLineAccessor.java

...ill/ics/nscclient/condition/ConditionManagerAccessor.java

.../java/fr/ill/ics/nscclient/dataprovider/DataAccessor.java

...ll/ics/nscclient/dataprovider/ServantManagerAccessor.java

...r/ill/ics/nscclient/variable/VariableManagerAccessor.java