moved enlinkd classes to proper package
Moved all the factories methid to EnLinkdElementFactory, added bridge link to linkednode page
Add null check

Conflicts:
	opennms-services/src/main/java/org/opennms/netmgt/linkd/DiscoveryLink.java
add BridgeLinkStatusProvider
Added links from node to bridge

The links are found using the ip/mac association on the node
Add bridge topology status provider
Merge branch 'space/14.1' of github.com:OpenNMS/opennms into space/14.1
Fix SPC-964
SPC-961 find all OspfElements by routerid
SPC-963, update default focus to show node label