或懂模块更改了数据为空时产生的错误，课表更正了错别字==

Signed-off-by: wolf <liubing.wolf@gmail.com>
Merge branch 'develop' of https://github.com/HeraldStudio/EzHerald into develop
活动模块修改了一些,完成还得等活动站完成

Signed-off-by: wolf <liubing.wolf@gmail.com>
Merge branch 'develop' of https://github.com/HeraldStudio/EzHerald into develop