[Code Style] Use prototypes in About bundle

WTD-1482.

platform/commonUI/about/src/AboutController.js

@@ -41,30 +41,28 @@ define(
          * @param $window Angular-injected window object
          */
         function AboutController(versions, $window) {
-            return {
+            this.versionDefinitions = versions;
+            this.$window = $window;
+        }
+
         /**
          * Get version info. This is given as an array of
          * objects, where each object is intended to appear
          * as a line-item in the version information listing.
-                 * @memberof AboutController#
          * @returns {object[]} version information
-                 * @memberof platform/commonUI/about.AboutController#
          */
-                versions: function () {
+        AboutController.prototype.versions = function () {
-                    return versions;
+            return this.versionDefinitions;
-                },
+        };
+
         /**
          * Open a new window (or tab, depending on browser
          * configuration) containing open source licenses.
-                 * @memberof AboutController#
-                 * @memberof platform/commonUI/about.AboutController#
          */
-                openLicenses: function () {
+        AboutController.prototype.openLicenses = function () {
             // Open a new browser window at the licenses route
-                    $window.open("#/licenses");
+            this.$window.open("#/licenses");
-                }
         };
-        }
 
         return AboutController;
     }

platform/commonUI/about/src/LicenseController.js

@@ -33,17 +33,17 @@ define(
          * @constructor
          */
         function LicenseController(licenses) {
-            return {
+            this.licenseDefinitions = licenses;
+        }
+
         /**
          * Get license information.
          * @returns {Array} license extensions
          * @memberof platform/commonUI/about.LicenseController#
          */
-                licenses: function () {
+        LicenseController.prototype.licenses = function () {
-                    return licenses;
+            return this.licenseDefinitions;
-                }
         };
-        }
 
         return LicenseController;
     }

platform/commonUI/about/src/LogoController.js

@@ -34,17 +34,17 @@ define(
          * @param {OverlayService} overlayService the overlay service
          */
         function LogoController(overlayService) {
-            return {
+            this.overlayService = overlayService;
+        }
+
         /**
          * Display the About dialog.
          * @memberof LogoController#
          * @memberof platform/commonUI/about.LogoController#
          */
-                showAboutDialog: function () {
+        LogoController.prototype.showAboutDialog = function () {
-                    overlayService.createOverlay("overlay-about");
+            this.overlayService.createOverlay("overlay-about");
-                }
         };
-        }
 
         return LogoController;
     }