Add CompletenessMixin in SiteDetail view
Add CompletenessMixin in SiteDetail view

GeotrekCE/Geotrek-admin,GeotrekCE/Geotrek-admin,makinacorpus/Geotrek,makinacorpus/Geotrek,makinacorpus/Geotrek,GeotrekCE/Geotrek-admin,makinacorpus/Geotrek,GeotrekCE/Geotrek-admin