Rename .js.es6 to .js in the admin application

app/assets/javascripts/admin/controllers/admin-site-settings-category.js

@@ -0,0 +1,17 @@
+import discourseComputed from "discourse-common/utils/decorators";
+import Controller, { inject as controller } from "@ember/controller";
+
+export default Controller.extend({
+  adminSiteSettings: controller(),
+  categoryNameKey: null,
+
+  @discourseComputed("adminSiteSettings.visibleSiteSettings", "categoryNameKey")
+  category(categories, nameKey) {
+    return (categories || []).findBy("nameKey", nameKey);
+  },
+
+  @discourseComputed("category")
+  filteredContent(category) {
+    return category ? category.siteSettings : [];
+  }
+});