Change URL for download count service

no issue

- we're moving the internal endpoint for fetching counts to count.ghost.org

ghost/admin/app/mirage/config.js

@@ -90,7 +90,7 @@ export default function () {
     /* Download Count ------------------------------------------------------- */
 
     let downloadCount = 0;
-    this.get('http://ghost.org/count/', function () {
+    this.get('https://count.ghost.org/', function () {
         downloadCount++;
         return {
             count: downloadCount

ghost/admin/app/utils/ghost-paths.js

@@ -28,7 +28,7 @@ export default function () {
         apiRoot,
         subdir,
         blogRoot: `${subdir}/`,
-        count: 'https://ghost.org/count/',
+        count: 'https://count.ghost.org/',
 
         url: {
             admin() {