add isEnabled to FilterManager
SPC-831, show filtered alarms when category is collapsed
SPC-799, remove focal nodes when node deleted from OpenNMS
SCP-799, missed file for fix
remove Nullable import
fix LinkdTopologyProviderTest test
SPC-844 & 842, fix issue with dragging in manual layout
JUNIPER-ONLY: SPC-843
Merge branch 'space-13.2' of github.com:JunosSpace/opennms into space-13.2
Merge branch 'space/13.2' of git://github.com/OpenNMS/opennms into space-13.2