!!! 5
%html{ lang: "en"}
  = render "layouts/head", title: group_head_title
  %body{class: "#{app_theme}  application", :'data-page' => body_data_page}
    = render "layouts/head_panel", title: link_to(@group.name, group_path(@group))
    = render 'layouts/page', sidebar: 'layouts/nav/group'