Align project files with CodeHarbor

Since both projects are developed together and by the same team, we also want to have the same code structure and utility methods available in both projects. Therefore, this commit changes many files, but without a functional change.

config/initializers/rails_admin.rb

@@ -8,14 +8,13 @@ RailsAdmin.config do |config|
   # config.authenticate_with do
   #   warden.authenticate! scope: :user
   # end
-  # config.current_user_method(&:current_user)
+  config.current_user_method(&:current_user)
 
   ## == CancanCan ==
   # config.authorize_with :cancancan
 
   ## == Pundit ==
   # config.authorize_with :pundit
-  config.parent_controller = '::RailsAdminController'
 
   config.authorize_with do
     # Important! We need to check the authorization here, we skip Pundit checks in the RailsAdminController.
@@ -30,6 +29,9 @@ RailsAdmin.config do |config|
 
   ### More at https://github.com/sferik/rails_admin/wiki/Base-configuration
 
+  config.parent_controller = '::RailsAdminController'
+  config.excluded_models = %w[Generators::TestingFrameworkAdapterGenerator]
+
   ## == Gravatar integration ==
   ## To disable Gravatar integration in Navigation Bar set to false
   # config.show_gravatar = true
@@ -51,8 +53,6 @@ RailsAdmin.config do |config|
     end
   end
 
-  config.excluded_models = %w[Generators::TestingFrameworkAdapterGenerator]
-
   config.actions do
     # mandatory
     dashboard do