Add surveys; custom generated by admins

Available during registration or after conference

Co-authored-by: Shyukri <shshyukriev@suse.com>
Co-authored-by: Henne <hvogel@opensuse.org>
Co-authored-by: Moises <mdeniz@suse.com>

app/views/conference_registrations/show.html.haml

@@ -55,24 +55,17 @@
               = @registration.departure.strftime('%A, %B %-d. %Y %H:%M')
           - else
             You haven't scheduled your departure
-  - if @conference.questions.any?
+  - if @conference.surveys.for_registration.any?
     .row
       .col-md-12
         %h4
           %span.fa-stack
             %i.fa.fa-square-o.fa-stack-2x
             %i.fa.fa-info.fa-stack-1x
-          Additional Info
+          Surveys
+
         %ul
-          - @conference.questions.each do |q|
-            %li
-              %strong
-                = q.title
-              - if @registration.qanswers.any?
-                - @registration.qanswers.where(question_id: q.id).each do |qa|
-                  = qa.answer.title
-              - else
-                You haven't answered
+          = render partial: 'surveys/list', locals: { surveys: @conference.surveys.for_registration, conference: @conference }
   - if @registration.events.any?
     .row
       .col-md-12