qm ontology filter
Merge branch 'virtuoso_em' of https://github.com/espresto/XWikiLinkRecommender into virtuoso_em

Conflicts:
	src/java/de/csw/linkgenerator/plugin/lucene/IndexData.java
	src/java/de/csw/linkgenerator/plugin/lucene/IndexUpdater.java
	src/java/de/csw/linkgenerator/plugin/lucene/LucenePlugin.java
	src/java/de/csw/linkgenerator/plugin/lucene/SearchResults.java
	src/java/de/csw/linkgenerator/struts/CSWLinkAction.java
	src/java/de/csw/lucene/ConceptFilter.java
	src/java/de/csw/ontology/OntologyIndex.java
	src/java/de/csw/ontology/XWikiTextEnhancer.java