updated with get Root Etype, root  structure and root concept
updated with get Root[etype, concept structure]
gitignore update
Merge branch 'master' of https://github.com/opendatatrentino/disi-open-data-client

Conflicts:
	conf/sweb-webapi-model.properties
	pom.xml
	src/main/java/eu/trentorise/opendatarise/semantics/services/NLPService.java