GUI -- Test events: unpinned the first node; increased a few link widths.
 - added alerts pane to framework.
 - added library registration mechanism to framework.
 - created d3Utils library
 - reimplemented drag behavior of nodes.

Change-Id: I501f4ab6eded8393948cede903573580599258b1
diff --git a/web/gui/src/main/webapp/json/eventTest_24.json b/web/gui/src/main/webapp/json/eventTest_24.json
index 2287f6c..756b6c1 100644
--- a/web/gui/src/main/webapp/json/eventTest_24.json
+++ b/web/gui/src/main/webapp/json/eventTest_24.json
@@ -6,7 +6,7 @@
     "dst": "of:0000ffffffffff08",
     "dstPort": "20",
     "type": "optical",
-    "linkWidth": 2,
+    "linkWidth": 6,
     "props" : {
       "BW": "70 G"
     }