Fix update announcement setting bug.

app/views/admin/announcements/settings.html.erb

@@ -110,6 +110,7 @@
       }
     })
   }
+  $(document).ready(function(){
     var approverList = $(".hidden-approver-list");
     $(".approver-check input").on("click",function(){
       var el = $(this);
@@ -123,6 +124,7 @@
         approverList.find("#check_" + el.val()).remove();
       }
     })
+  })
 </script>
 <div id="notification"><%= t("announcement.click_on_submit") %></div>
 <%= form_for @setting, url: (@setting.new_record? ? admin_announcement_createsettings_path : admin_announcement_updatesettings_path), html: {class: "form-horizontal main-forms"} do |f| %>