Added a number of demo-related artifacts. Enhanced GUI a bit.

Change-Id: I4501cb338f9eab07420fb60e347167deda5074be
diff --git a/tools/test/topos/attmplsext.json b/tools/test/topos/attmplsext.json
new file mode 100644
index 0000000..f94e7bc
--- /dev/null
+++ b/tools/test/topos/attmplsext.json
@@ -0,0 +1,18 @@
+{
+  "devices": [
+    { "alias": "s11", "uri": "of:0000001000000001", "mac": "001000000001", "annotations": { "name": "MINE", "latitude": 44.977862, "longitude":  -93.265427 }, "type": "SWITCH" },
+    { "alias": "s12", "uri": "of:0000001000000002", "mac": "001000000002", "annotations": { "name": "BISM", "latitude": 46.817887, "longitude": -100.786109 }, "type": "SWITCH" },
+    { "alias": "s13", "uri": "of:0000001000000003", "mac": "001000000003", "annotations": { "name": "BOIS", "latitude": 43.617834, "longitude": -116.216903 }, "type": "SWITCH" },
+    { "alias": "s14", "uri": "of:0000001000000004", "mac": "001000000004", "annotations": { "name": "RENO", "latitude": 39.533310, "longitude": -119.796940 }, "type": "SWITCH" },
+    { "alias": "s15", "uri": "of:0000001000000005", "mac": "001000000005", "annotations": { "name": "ALBU", "latitude": 35.109657, "longitude": -106.626698 }, "type": "SWITCH" }
+  ],
+
+  "hosts": [
+    { "alias": "h31", "mac": "00:10:00:00:00:01", "vlan": -1, "location": "of:0000001000000001/1", "ip": "10.0.0.31", "annotations": { "name": "MINE", "latitude": 46.509021, "longitude":  -93.820777 } },
+    { "alias": "h32", "mac": "00:10:00:00:00:02", "vlan": -1, "location": "of:0000001000000002/1", "ip": "10.0.0.32", "annotations": { "name": "BISM", "latitude": 48.169551, "longitude": -101.866954 } },
+    { "alias": "h33", "mac": "00:10:00:00:00:03", "vlan": -1, "location": "of:0000001000000003/1", "ip": "10.0.0.33", "annotations": { "name": "BOIS", "latitude": 44.617834, "longitude": -117.216903 } },
+    { "alias": "h34", "mac": "00:10:00:00:00:04", "vlan": -1, "location": "of:0000001000000004/1", "ip": "10.0.0.34", "annotations": { "name": "RENO", "latitude": 40.686744, "longitude": -117.886514 } },
+    { "alias": "h35", "mac": "00:10:00:00:00:05", "vlan": -1, "location": "of:0000001000000005/1", "ip": "10.0.0.35", "annotations": { "name": "ALBU", "latitude": 35.486729, "longitude": -104.231201 } }
+  ]
+
+}