GUI -- Added updateDevice event handling.
 - Display offline devices as grey.
 - Tracing web socket messages (for now, in console; in future, to trace view).
 - Captured sample events for use with test scenarios - both from and to the server.
 - Added description to scenario file.

Change-Id: I7825b32d63496ebea2ab5789519fb0c6af6c5257
diff --git a/web/gui/src/main/webapp/json/ev/_capture/rx/removeLink_ex1.json b/web/gui/src/main/webapp/json/ev/_capture/rx/removeLink_ex1.json
new file mode 100644
index 0000000..8d1dd03
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/_capture/rx/removeLink_ex1.json
@@ -0,0 +1,12 @@
+{
+  "event": "removeLink",
+  "payload": {
+    "id": "of:0000000000000001/1-of:0000000000000002/4",
+    "type": "direct",
+    "linkWidth": 2,
+    "src": "of:0000000000000001",
+    "srcPort": "1",
+    "dst": "of:0000000000000002",
+    "dstPort": "4"
+  }
+}