app/views/cms/_translatable.html.erb
<% if @article.translatable? %>
<div class="formfieldline article-translation-field">
<%= label :article, :language, _('Language'), class: "formlabel" %>
<%= select :article, :language, @locales, { :selected => @selected_locale, :include_blank => true } %>
<%= hidden_field(:article, :translation_of_id) %>
</div>
<% end %>