ℹ️ Updated default config and CDN for frontend apps

refs https://github.com/TryGhost/Team/issues/1719

- switches default CDN from unpkg to jsDelivr for better reliability
- current config for frontend apps doesn't allow easy switching of CDN for frontend urls
- allows easy switch of base CDN for frontend apps via config
- fixes double use of version string in the config
- extends config to include url needed for loading styles for frontend app instead of hardcoded urs

ghost/core/core/shared/config/defaults.json

@@ -133,12 +133,18 @@
         "emailAnalytics": true
     },
     "portal": {
-        "url": "https://unpkg.com/@tryghost/portal@~2.3.0/umd/portal.min.js",
+        "url": "https://cdn.jsdelivr.net/npm/@tryghost/portal@~{version}/umd/portal.min.js",
         "version": "2.3"
     },
     "sodoSearch": {
-        "url": "https://unpkg.com/@tryghost/sodo-search@~1.0.0/umd/sodo-search.min.js",
-        "version": "1.0.0"
+        "url": "https://cdn.jsdelivr.net/npm/@tryghost/sodo-search@~{version}/umd/sodo-search.min.js",
+        "styles": "https://cdn.jsdelivr.net/npm/@tryghost/sodo-search@~{version}/umd/main.css",
+        "version": "1.0"
+    },
+    "comments": {
+        "url": "https://cdn.jsdelivr.net/npm/@tryghost/comments-ui@~{version}/umd/comments-ui.min.js",
+        "styles": "https://cdn.jsdelivr.net/npm/@tryghost/comments-ui@~{version}/umd/main.css",
+        "version": "0.1"
     },
     "editor": {
         "url": ""
@@ -155,9 +161,5 @@
     },
     "gravatar": {
         "url": "https://www.gravatar.com/avatar/{hash}?s={size}&r={rating}&d={_default}"
-    },
-    "comments": {
-        "url": "https://unpkg.com/@tryghost/comments-ui@~0.1.0/umd/comments-ui.min.js",
-        "version": "0.1.0"
     }
 }

ghost/core/core/shared/config/env/config.testing.json

@@ -56,7 +56,8 @@
         "urlCache": "test/utils/fixtures/urls"
     },
     "sodoSearch": {
-        "url": "https://unpkg.com/@tryghost/sodo-search@~0.1.0/umd/sodo-search.min.js",
-        "version": "0.1.0"
+        "url": "https://cdn.jsdelivr.net/npm/@tryghost/sodo-search@~{version}/umd/sodo-search.min.js",
+        "styles": "https://cdn.jsdelivr.net/npm/@tryghost/sodo-search@~{version}/umd/main.css",
+        "version": "1.0"
     }
 }