Removed www prefix from newsletter link table

closes https://github.com/TryGhost/Team/issues/2206

- removes `www.` from the url shown on links table in post analytics
- we had previously removed http(s) protocol from it as well, and they are only shown while editing the url

ghost/admin/app/services/utils.js

@@ -16,9 +16,9 @@ export default class UtilsService extends Service {
 
     /**
      * Remove tracking parameters from a URL
-     * @param {string} url 
+     * @param {string} url
      * @param {boolean} [display] Set to true to remove protocol and hash from the URL
-     * @returns 
+     * @returns
      */
     cleanTrackedUrl(url, display = false) {
         // Remove our own querystring parameters and protocol
@@ -31,6 +31,8 @@ export default class UtilsService extends Service {
             return urlObj.toString();
         }
         // Return URL without protocol
-        return urlObj.host + (urlObj.pathname === '/' && !urlObj.search ? '' : urlObj.pathname) + (urlObj.search ? urlObj.search : '') + (urlObj.hash ? urlObj.hash : '');
+        const urlWithoutProtocol = urlObj.host + (urlObj.pathname === '/' && !urlObj.search ? '' : urlObj.pathname) + (urlObj.search ? urlObj.search : '') + (urlObj.hash ? urlObj.hash : '');
+        // remove www. from the start of the URL
+        return urlWithoutProtocol.replace(/^www\./, '');
     }
 }

ghost/admin/tests/unit/services/utils-test.js

@@ -0,0 +1,25 @@
+import {describe, it} from 'mocha'; import {expect} from 'chai';
+import {setupTest} from 'ember-mocha';
+
+describe('Unit: Service: utils', function () {
+    setupTest();
+
+    describe('cleanTrackedUrl', function () {
+        let utilsService;
+        beforeEach(function () {
+            utilsService = this.owner.lookup('service:utils');
+        });
+
+        it('removes protocol and www from url if display is true', function () {
+            const url = 'https://www.ghost.org';
+            const output = utilsService.cleanTrackedUrl(url, true);
+            expect(output).to.be('ghost.org');
+        });
+
+        it('removes tracking params from the url', function () {
+            const url = 'https://www.ghost.org?ref=123&attribution_id=something&attribution_type=something&leave=123';
+            const output = utilsService.cleanTrackedUrl(url, false);
+            expect(output).to.be('https://www.ghost.org?leave=123');
+        });
+    });
+});