Hide system info when running in hosted environments

refs https://github.com/TryGhost/Toolbox/issues/326

- we want to simplify the What's New screen to hide the fields that are
  irrelevant for users in hosted environments
- this should still show the database warning for self-hosters

ghost/admin/app/controllers/whatsnew.js

@@ -13,16 +13,21 @@ export default class WhatsNewController extends Controller {
         return date.getFullYear();
     }
 
-    get showDatabaseWarning() {
-        const isProduction = !!this.config.get('environment').match?.(/production/i);
+    get showSystemInfo() {
         const isPro = !!this.config.get('hostSettings')?.siteId;
-        const database = this.config.get('database');
 
-        // Don't show any warnings for Pro
+        // Don't show any system info for Pro
         if (isPro) {
             return false;
         }
 
+        return true;
+    }
+
+    get showDatabaseWarning() {
+        const isProduction = !!this.config.get('environment').match?.(/production/i);
+        const database = this.config.get('database');
+
         // Show a warning if we're in production and not using MySQL 8
         if (isProduction && database !== 'mysql8') {
             return true;

ghost/admin/app/templates/whatsnew.hbs

@@ -51,15 +51,17 @@
 
                 <ul class="gh-env-list">
                     <li><strong>Version:</strong> {{this.config.version}}</li>
+                    {{#if this.showSystemInfo}}
                     <li><strong>Environment:</strong> <span class="ttc">{{this.config.environment}}</span></li>
                     <li class="gh-env-list-database-type"><strong>Database:</strong> {{this.config.database}}</li>
                     <li><strong>Mail:</strong> {{#if this.config.mail}}{{this.config.mail}}{{else}}Native{{/if}}</li>
+                    {{/if}}
                     {{#if (enable-developer-experiments)}}
                     <li><strong>Developer experiments:</strong> <span class="gh-badge">Enabled</span></li>
                     {{/if}}
                 </ul>
 
-                {{#if this.showDatabaseWarning}}
+                {{#if (and this.showSystemInfo this.showDatabaseWarning)}}
                     <section class="gh-upgrade-notification">
                         <p>
                             <strong>Warning:</strong> MySQL 8 will be the required database in the next major release of Ghost. Make sure your database is up to date to ensure forwards compatibility.