bring back hidden pre-init initializer config (#5640)

Author: igbanam

app/controllers/application_controller.rb

@@ -18,6 +18,11 @@ def set_reporting_time_zone
     Groupdate.time_zone = "UTC"
   end
 
+  def current_enabled_features
+    @current_enabled_features ||= Flipper.features.select { |feature| feature.enabled?(current_admin) }.map(&:name)
+  end
+  helper_method :current_enabled_features
+
   private
 
   # Send a user to the admins index after sending invitations

config/initializers/01_extensions.rb

@@ -1 +1,3 @@
+require "simple_server_extensions"
+require "metrics"
 require "extensions/fetch_multi_fix"