crowdAI/crowdai

<div class='content'>
  <%= concept(Challenge::Cell::ChallengeMasthead,
                @challenge,
                current_participant: current_participant) %>
  <%= render partial: 'challenges/show/subnav',
        locals: { challenge: @challenge } %>
  <%= concept(ParticipantClefTask::Cell,
                @clef_task,
                current_participant: current_participant,
                challenge_id: @challenge.id) %>
</div>