Merge giggsey:patch-1 into improve-performance-of-network-graph

app/assets/stylesheets/sections/graph.scss

@@ -13,7 +13,8 @@
     background: #f1f1f1;
     cursor: move;
     height: 500px;
-    overflow: hidden;
+    overflow-y: scroll;
+    overflow-x: hidden;
   }
 }