Filter correctly obsolete entries in chain select component

The method List<DirectorySelectItem> getSelectItems( VocabularyEntryList directoryValues, Map<String, Serializable> filter) in DirectoryHelper.java does not filter correctly obsolete entries.

This method is used when using the nxu:chainSelectListbox tag, attribute directoryValues instead of directoryName.

Here is the patch:
Integer obsoleteInteger = (Integer) filter.get("obsolete");
Boolean obsolete = obsoleteInteger != null && 1 == obsoleteInteger;

if (obsolete != null && !obsolete.equals(entry.getObsolete()))