tree e07c520eaf0d13edc5f1217147a97089e7c71f5b
parent a7841edace66512dc403122226853100df3d6ed0
author Simon Hunt <simon@onlab.us> 1431567136 -0700
committer Gerrit Code Review <gerrit@onlab.us> 1431629983 +0000

GUI -- Further work on refactoring Topology View server side code. Still WIP...
- added topology client heartbeat.
- modified AbstractListenerRegistry to allow for extension.

Change-Id: Ib8ea6ad4ba34f5732d062f1c9ef545f105eb167b