add bootstrap-switch for is_highlight

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

@@ -22,6 +22,8 @@
           %b Submitter
         %th
           %b Speaker
+        %th
+          %b Highlight
         %th
           %b Type
         %th
@@ -70,6 +72,10 @@
               = link_to speaker.name, admin_user_path(speaker)
             - else
               Unknown speaker
+          %td
+            = check_box_tag @conference.short_title, event.id, event.is_highlight, class: 'switch-checkbox',
+            data: { size: "small" }
+
           %td
             .btn-group
               %button{:type=>"button", :class=>"btn btn-link dropdown-toggle", "data-toggle"=>"dropdown"}