Remove not catalogued data (subject chains field >= 952)

See hbz/lobid#76
Merge pull request #612 from lobid/issues-lobid-76

Remove not catalogued data (subject chains field >= 952)
Merge branch 'master' into issue-nwbib-42-wikidata-geo-links-simplest

Conflicts:
	lodmill-rd/src/main/resources/morph-hbz01-to-lobid.xml
	lodmill-rd/src/test/resources/hbz01.nt