[Scrolling] Add JSDoc, clean up

Clean up scripts for Scrolling List view and add
some JSDoc. WTD-534.

platform/features/scrolling/src/NameColumn.js

@@ -9,14 +9,25 @@ define(
         "use strict";
 
         /**
+         * A column which will report the name of the domain object
+         * which exposed specific telemetry values.
          *
          * @constructor
          */
         function NameColumn() {
             return {
+                /**
+                 * Get the title to display in this column's header.
+                 * @returns {string} the title to display
+                 */
                 getTitle: function () {
                     return "Name";
                 },
+                /**
+                 * Get the text to display inside a row under this
+                 * column. This returns the domain object's name.
+                 * @returns {string} the text to display
+                 */
                 getValue: function (domainObject) {
                     return domainObject.getModel().name;
                 }