correcting ticket's details view and its related models.

app/views/admin/tickets/index.html.haml

@@ -10,9 +10,9 @@
       %table.table.table-hover#tickets
         %thead
           %th Title
-          %th Description
           %th Price
           %th Sold
+          %th Turnover
           %th Actions
         %tbody
           - @conference.tickets.each do |ticket|
@@ -20,12 +20,12 @@
               %td
                 = link_to(admin_conference_ticket_path(@conference.short_title, ticket.id)) do
                   = ticket.title
-              %td
-                = truncate(ticket.description)
               %td
                 = humanized_money_with_symbol ticket.price
               %td
-                = ticket.buyers.count
+                = ticket.tickets_sold
+              %td
+                = humanized_money_with_symbol ticket.tickets_turnover
               %td
                 .btn-group
                   = link_to 'Edit', edit_admin_conference_ticket_path(@conference.short_title, ticket.id),