毕设评阅接口调整

app/views/graduation_tasks/cross_comment_setting.json.jbuilder

@@ -10,6 +10,8 @@ json.work_users @work_list do |work|
   end
 end
 
+json.user_count @work_list.size
+
 json.course_groups @course_groups do |group|
   json.(group, :id, :name)
 end