Improve project according to Geoffrey's remark on the git pull (https://github.com/droolsjbpm/droolsjbpm-integration/pull/46), link project to droolsjbpm-parent
Resolve conflicts + remove unused maven-plugin.version properties + upgrade maven plugins as drools-osgi likes it

Merge branch 'drools-osgi' of github.com:cmoulliard/droolsjbpm-build-bootstrap

Conflicts:
	pom.xml
drools-osgi: Remove misleading *.version properties that aren't actually used in dependencyManagement
drools-osgi: undo "eclipse doesn't respect new lines" formatting problem