<% content_for :side_bar do %>
<%= render :partial => 'layouts/side_bar', :locals => {:link_name => t('site.settings'), :link_url => admin_site_site_info_path(@site), :icon => 'icons-cog', :side_bar_content => 'admin/sites/side_bar'} %>
<% end %>
system_info.html.erb
