GUI -- Preliminary work for converting tabular views to use the shared web-socket rather than via REST. WIP.

Change-Id: I68de98e8df0a2bbcebe15ad9015ce6b4df43d81c
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
index 13dde08..e63dbf7 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
@@ -566,6 +566,7 @@
 
     // Adds all internal listeners.
     private void addListeners() {
+        listenersRemoved = false;
         clusterService.addListener(clusterListener);
         mastershipService.addListener(mastershipListener);
         deviceService.addListener(deviceListener);