ONOS-5726: completed implementation of "showIntent" overlay support.
(note, there is still some cleanup to be done).

Change-Id: I6c805ad954b97ca261b5536240b277df7712a834
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2.js b/web/gui/src/main/webapp/app/view/topo2/topo2.js
index e37872f..632dd14 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2.js
@@ -211,7 +211,7 @@
             // tps.initPanels();
 
             // restoreConfigFromPrefs();
-            // ttbs.setDefaultOverlay(prefsState.ovidx);
+            // ttbs.setDefaultOverlay(prefsState.ovid);
 
             // $log.debug('registered overlays...', tov.list());
 
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Prefs.js b/web/gui/src/main/webapp/app/view/topo2/topo2Prefs.js
index 690ac59..9eaf243 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Prefs.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Prefs.js
@@ -29,7 +29,7 @@
         porthl: 1,
         bg: 0,
         spr: 0,
-        ovidx: 1,   // default to traffic overlay
+        ovid: 'traffic',   // default to traffic overlay
         toolbar: 0
     };