Changed QueryInterfaceView to react better to a click of "Cancel
Operation" in Protege: added Statement.cancel call, and also replaces
the Connection in the reasoner.
Merge branch 'develop' into bugfix/protegeFreeze
remove old sesame maven repo
Merge branch 'develop' into version2

Conflicts:
	obdalib-protege41/src/main/java/org/semanticweb/ontop/protege4/views/QueryInterfaceView.java