cleanup
ref #6241 change @date to @since (fix)
ref #6241 change @date to @since
ref #6190 removing svn property place holder in first line of code
#4716 IndexDocValue relates issues solved, indexing now without exceptions, most tests in TaxonServiceSearchTest successful
first steps to make lucene working again
avoiding id unnecessary fields in the lucene index
avoiding id duplication in lucene index, circumvents a bug in hibernate-search
free text search: better querying for 'isNotNull' and code harmonization