manage clean_website asynchronously

app/models/concerns/as_indirect_object.rb

@@ -69,4 +69,5 @@ module AsIndirectObject
       website.sync_indirect_object_with_git self
     end
   end
+
 end
\ No newline at end of file

app/models/concerns/with_dependencies.rb

@@ -117,6 +117,7 @@ module WithDependencies
       clean_websites(websites_to_clean)
     end
   end
+  handle_asynchronously :clean_websites_if_necessary, queue: :default
 
   def clean_websites(websites)
     # Les objets directs et les objets indirects (et les websites) répondent !