convert hardcoded versions to ${project.version}
Implement 404 page not found handlers, that display an OpenNMS UI branded page, rather than the default jetty page.
Merge branch '1.12'

Conflicts:
	features/topology-map/themes/default-theme/pom.xml
	opennms-tools/csv-requisitions/pom.xml
	opennms-tools/ireport-jrobin-provider/pom.xml
	opennms-tools/jrobin-spike-hunter/pom.xml
	opennms-tools/mib2events/pom.xml
	opennms-webapp/pom.xml