Topo2: Updated collection to ignore models with the same Id

Change-Id: Ic2faadb76f865921092217bda0aac636349cc1af
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Region.js b/web/gui/src/main/webapp/app/view/topo2/topo2Region.js
index 68b1ad1..cd4a75b 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Region.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Region.js
@@ -86,6 +86,8 @@
                     this.sortMultiLinks();
                     this.assignPeerLocations();
 
+                    // TODO: RegionLinks are dublicated in JSON Payload
+
                     this.model.set({ subregions: t2sr.createSubRegionCollection(this.regionData.subregions, this) });
                     this.model.set({ devices: t2ds.createDeviceCollection(this.regionData.devices, this) });
                     this.model.set({ hosts: t2hs.createHostCollection(this.regionData.hosts, this) });