Enabled Portal settings for all sites (#1748)

refs 8ad11fe082

- Removes Portal settings access from behind flag and includes it by default.

Portal script is now enabled as default, the change here allows Site owners to access Portal settings via Ghost-Admin

app/components/gh-members-lab-setting.hbs

@@ -1,6 +1,6 @@
 <div class="flex flex-column b--whitegrey bt mb5">
 
-    {{#if (and this.feature.labs.members (or (enable-developer-experiments) this.config.portal))}}
+    {{#if this.feature.labs.members}}
     <div class="gh-setting-header">Portal</div>
     <section class="flex flex-column br3 shadow-1 bg-grouped-table mt1 pa5 relative gh-settings-portal-section">
         <div class="gh-setting-last gh-setting-first relative">