GUI -- Re-instated Packet / Optical Layer filters.
- Adding ONOS instance fly-in pane. Note: still WIP.
- refactored onos.ui.addFloatingPanel to allow TL vs. TR.
- added instance pane to topo view.
- implemented addInstance() event.
- refactored event tracing.
- added instances test scenario.

Change-Id: I58d9769afa8aee9079ec778496cbc47bef329608
diff --git a/web/gui/src/main/webapp/json/ev/instances/scenario.json b/web/gui/src/main/webapp/json/ev/instances/scenario.json
new file mode 100644
index 0000000..807a51b2
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/instances/scenario.json
@@ -0,0 +1,16 @@
+{
+  "comments": [
+    "Developing ONOS instance visualization"
+  ],
+  "title": "ONOS Instance Scenario",
+  "params": {
+    "lastAuto": 17
+  },
+  "description": [
+    "Visualizing ONOS instances.",
+    "",
+    "Press 'S' to load initial events.",
+    "",
+    "Press spacebar to complete the scenario..."
+  ]
+}