osem-fcy/app/views/devise/shared/_openid_links.html.haml

.text-center
  .btn-group.btn-group-lg
    - omniauth_configured.each do |provider|
      = link_to user_omniauth_authorize_path(provider), class: "btn btn-success btn-lg",
                                                        id: "omniauth-#{provider}",
                                                        title: "Your #{provider} login" do
        %i{:class => "fa fa-#{provider}"}