GUI -- Added CSS classes for primary, secondary, animated, and optical links
 - refactored showTraffic(...) to handle the updated payload.
 - created 'traffic' scenario:: run with ... webapp/index2.html#topo,traffic?local

Change-Id: I5e3a33abcbc9c82f751165b4f52807f7cd59ef03
diff --git a/web/gui/src/main/webapp/json/ev/traffic/scenario.json b/web/gui/src/main/webapp/json/ev/traffic/scenario.json
new file mode 100644
index 0000000..06f9bf8
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/traffic/scenario.json
@@ -0,0 +1,16 @@
+{
+  "comments": [
+    "Stepping through showTraffic"
+  ],
+  "title": "Show Traffic Scenario",
+  "params": {
+    "lastAuto": 14
+  },
+  "description": [
+    "Figure out primary, secondary and animated link visualizations.",
+    "",
+    "Press 'S' to load initial events.",
+    "",
+    "Press spacebar to complete the scenario..."
+  ]
+}