Handle same as previous commit's jquery-backbone-binding-fail with st…

…andard event binding in list of pairs collection builder.

client/galaxy/scripts/mvc/collection/list-of-pairs-collection-creator.js

@@ -46,17 +46,28 @@ currPanel.once( 'rendered', function(){
             ),
 
             render: function() {
-                this.$el
+                this.dragStartHandler = _.bind(this._dragstart, this);
+                this.dragEndHandler = _.bind(this._dragend, this);
+                var handle = this.$el
                     .attr("draggable", true)
                     .data("pair", this.pair)
                     .html(this.template({ pair: this.pair }))
-                    .addClass("flex-column-container");
+                    .addClass("flex-column-container")
+                    .get(0);
+                handle.addEventListener(
+                    "dragstart",
+                    this.dragStartHandler,
+                    false
+                );
+                handle.addEventListener(
+                    "dragend",
+                    this.dragEndHandler,
+                    false
+                );
                 return this;
             },
 
             events: {
-                dragstart: "_dragstart",
-                dragend: "_dragend",
                 dragover: "_sendToParent",
                 drop: "_sendToParent"
             },