Merge branch 'master' into master-juno

Conflicts:
	pom.xml
	releng/org.eclipse.gendoc.target/2018-09/2018-09-papyrus.target
	releng/org.eclipse.gendoc.target/2018-09/2018-09-sirius.target

Change-Id: I3cc1e3fd17ed67e33c818bfee0169f51710aa6a4