added datatype thesaurus
added sigma schematron | added sigma datatypes thesaurus
removed sigma-datatypes thesaurus --> added to master branch
added SIGMA-DataTypes thesaurus
Merge branch 'master' into sigmaportal
move thesauri to master branch
updated sigma thesauri
Merge branch 'master' into sigmaportal

Conflicts:
	web/src/main/webapp/WEB-INF/data/config/codelist/external/thesauri/place/SIGMA-Regions.rdf
	web/src/main/webapp/WEB-INF/data/config/codelist/external/thesauri/temporal/SIGMA-Years.rdf
added hyperlinks | modified home screen interface | changed metadata logo picker logic