change: remove date from @author tag

.../java/ch/systemsx/cisd/common/exceptions/InternalErr.java

...ava/ch/systemsx/cisd/common/parser/IPropertiesSetter.java

...h/systemsx/cisd/common/parser/IPropertyObjectFactory.java

...a/ch/systemsx/cisd/common/utilities/AbstractHashable.java

...java/ch/systemsx/cisd/common/utilities/IStoreHandler.java

...rce/java/ch/systemsx/cisd/common/utilities/StoreItem.java