ONOS-2470: Implement "Reset Node Locations" function in topology view.
- also cleaned up some Long/Lat code.
- Note also that metadata from client is structured so 'lng/lat' properties
    (from repositioned node) are wrapped in 'equivLoc' object.

Change-Id: I5afc53d26ef56fc0932f8650e8f7df79b36c3947
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 ace9a0e..dbd5e0c 100644
--- a/web/gui/src/main/webapp/app/view/topo/topo.js
+++ b/web/gui/src/main/webapp/app/view/topo/topo.js
@@ -55,7 +55,7 @@
             B: [toggleMap, 'Toggle background map'],
             S: [toggleSprites, 'Toggle sprite layer'],
 
-            //X: [toggleNodeLock, 'Lock / unlock node positions'],
+            X: [tfs.resetAllLocations, 'Reset node locations'],
             Z: [tos.toggleOblique, 'Toggle oblique view (Experimental)'],
             N: [fltr.clickAction, 'Cycle node layers'],
             L: [tfs.cycleDeviceLabels, 'Cycle device labels'],