ONOS-4971: Synthetic Link Data -- WIP, merge anyway

- created temp Topology2 View (topoX) to "process" and display topology data.
- made root layout parent of itself (just like /.. = /) to simplify layout hierarchy operations.
- added nodeType property to JSON rep of regions/devices/hosts.
- augmented peers to include devices.
- added skeleton topo2NavRegion event.

Change-Id: I8219125d7dfe33d211350ae27111a3d9de6eb4ca
diff --git a/web/gui/src/main/webapp/app/view/topoX/topoX.html b/web/gui/src/main/webapp/app/view/topoX/topoX.html
new file mode 100644
index 0000000..41a94a5
--- /dev/null
+++ b/web/gui/src/main/webapp/app/view/topoX/topoX.html
@@ -0,0 +1,47 @@
+<!--
+  ~ Copyright 2016-present Open Networking Laboratory
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<!-- Topology View partial HTML -->
+<div id="ov-topoX">
+    <div id="topoXtmp">
+        <div class="parentRegion">
+            Parent Region: <span> - </span>
+        </div>
+        <div class="thisRegion">
+            This Region: <span> - </span>
+        </div>
+        <div class="subRegions">
+            <h4>Subregions</h4>
+            <div></div>
+        </div>
+        <div class="devices">
+            <h4>Devices</h4>
+            <div></div>
+        </div>
+        <div class="hosts">
+            <h4>Hosts</h4>
+            <div></div>
+        </div>
+        <div class="links">
+            <h4>Links</h4>
+            <div></div>
+        </div>
+        <div class="peers">
+            <h4>Peers</h4>
+            <div></div>
+        </div>
+    </div>
+</div>