GUI -- TopoView - working on mouse gestures - drag, click on nodes; mouseover,mouseout (WIP).

Change-Id: I2ecd4f805267fe72685381eb297a3d4cbbbd360a
diff --git a/web/gui/src/main/webapp/app/view/topo/topo.js b/web/gui/src/main/webapp/app/view/topo/topo.js
index f7568f5..f227290 100644
--- a/web/gui/src/main/webapp/app/view/topo/topo.js
+++ b/web/gui/src/main/webapp/app/view/topo/topo.js
@@ -54,7 +54,7 @@
             //X: [toggleNodeLock, 'Lock / unlock node positions'],
             //Z: [toggleOblique, 'Toggle oblique view (Experimental)'],
             L: [tfs.cycleDeviceLabels, 'Cycle device labels'],
-            //U: [unpin, 'Unpin node (hover mouse over)'],
+            U: [tfs.unpin, 'Unpin node (hover mouse over)'],
             R: [resetZoom, 'Reset pan / zoom'],
 
             //V: [showRelatedIntentsAction, 'Show all related intents'],