JBTIS-4.1.6.Final discovery artifacts
JBIDE-18589 : check for proper mobile tooling plugin, use new descriptors for GA

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-18594: Fix updates/staging/luna content

And update ide-config.properties to use it for Central
JBIDE-18594: Stage repo use /staging/ urls
JBDS-3179 pull latest PMD 4.0.4
fix composite*.xml files for consistency w/ other non-generated ones, and make sure that the compositeContent.xml file is of type compositeMetadataRepository, not compositeArtifactRepository