only html for admin, users restricted to university

app/assets/stylesheets/admin/styles.sass

app/controllers/admin/universities_controller.rb

app/controllers/admin/users_controller.rb

app/controllers/users/registrations_controller.rb

app/controllers/users/sessions_controller.rb

app/models/university.rb

app/models/university/with_identifier.rb

app/models/university/with_users.rb

app/models/user.rb

app/models/user/with_devise.rb

app/views/devise/shared/_links.html.erb

config/initializers/devise.rb

config/routes.rb

db/migrate/20210708041914_fix_uuids.rb

db/migrate/20210708052012_add_fields_to_programs.rb

db/migrate/20210801041644_enable_uuid.rb

db/migrate/20210801043544_create_universities.rb

db/migrate/20210801043712_devise_create_users.rb

db/migrate/20210808043034_create_programs.rb

db/migrate/20210808122438_create_qualiopi_criterions.rb