Add more enhancements for converting auto discovered nodes to provisioning groups.
This change addes the node's existing categories to the requisition.
Change categories collection to Set from List
upgrade to vaadin 7
use org.opennms.dependencies rather than hard-coded versions for snmp4j(-agent)
Fix provisiond logging.
log directory is flat, rpm does not need to create extra directories.
Log instead of writing to System.err
Remove a spurious System.out.println statement.
Add existing node categories, optionally.
Changed dashlet-ulf to dashlet-image to display a generic image, logo or branding
Merge branch 'master' into feature-hibernate4-upgrade