Require code of conduct acceptance on registration

app/views/conference_registrations/show.html.haml

@@ -14,6 +14,25 @@
             = "#{@conference.venue.city} / #{@conference.venue.country_name}."
           %small
             = date_string(@conference.start_date, @conference.end_date)
+  - unless @conference.code_of_conduct.blank?
+    .row
+      .col-md-12
+        %h4= fa_stacked_icon 'handshake-o', base: 'square-o', text: 'Code of Conduct'
+        %ul.fa-ul
+          - if @registration.accepted_code_of_conduct
+            %li.text-info
+              = fa_icon('check li')
+              You have accepted the
+              = link_to 'Code of Conduct', '#',
+                data: { toggle: 'modal', target: '#modal-code-of-conduct'}
+          - else
+            %li.text-warning
+              = fa_icon('exclamation-circle li')
+              You need to accept the
+              = link_to 'Code of Conduct', '#',
+                data: { toggle: 'modal', target: '#modal-code-of-conduct'}
+          = render 'conferences/code_of_conduct',
+            organization: @conference.organization
   .row
     .col-md-12
       %h4