[BUGFIX]'tablesort' not found and node-table

lib/infobox/node.js

 define(['chroma-js', 'moment', 'tablesort', 'helper'],
-  function (chroma, moment, Tablesort, helper) {
+  function (chroma, moment, tablesort, helper) {
     'use strict';
 
     function showGeoURI(d) {
@@ -264,7 +264,7 @@ define(['chroma-js', 'moment', 'tablesort', 'helper'],
 
         d.neighbours.forEach(function (n) {
           var unknown = !(n.node);
-          var tr1 = document.createElement('tr');
+          tr = document.createElement('tr');
 
           var td1 = document.createElement('td');
 
@@ -278,7 +278,7 @@ define(['chroma-js', 'moment', 'tablesort', 'helper'],
             td1.appendChild(span);
           }
 
-          tr1.appendChild(td1);
+          tr.appendChild(td1);
 
           var td2 = document.createElement('td');
 
@@ -293,17 +293,17 @@ define(['chroma-js', 'moment', 'tablesort', 'helper'],
             td2.textContent = n.id;
           }
 
-          tr1.appendChild(td2);
+          tr.appendChild(td2);
 
           var td3 = document.createElement('td');
           td3.textContent = helper.showTq(n.link);
           td3.style.color = linkScale(n.link.tq).hex();
-          tr1.appendChild(td3);
+          tr.appendChild(td3);
 
           var td4 = document.createElement('td');
           td4.textContent = helper.showDistance(n.link);
           td4.setAttribute('data-sort', n.link.distance !== undefined ? -n.link.distance : 1);
-          tr1.appendChild(td4);
+          tr.appendChild(td4);
 
           tbody.appendChild(tr);
         });