GUI - Implemented updateInstance event handler.
- Cleaned up onos instance rendering.

Change-Id: Ib074fb061467a566bc75052b14ea38ecbbc055b6
diff --git a/web/gui/src/main/webapp/topo2.css b/web/gui/src/main/webapp/topo2.css
index 484cfe7..4fd3d71 100644
--- a/web/gui/src/main/webapp/topo2.css
+++ b/web/gui/src/main/webapp/topo2.css
@@ -273,10 +273,12 @@
 
 #topo-oibox .onosInst img {
     opacity: 0.5;
+    padding: 3px;
 }
 
 #topo-oibox .onosInst.online img {
     opacity: 1.0;
+    padding: 3px;
 }
 
 #topo-oibox .onosInst img.ui {