Merge branches 'master' and 'ruansiyuan' of http://begitlab.chubanyun.me/rays/pcloud-book into ruansiyuan
修改打印日志 See merge request rays/pcloud-book!88
fix广告详情音视频转码bug See merge request rays/pcloud-book!85
修改7月封板bug See merge request rays/pcloud-book!84
学习报告改成收发一体 See merge request rays/pcloud-book!77
恢复定时任务 See merge request rays/pcloud-book!76