add homework related models
增加 模型配置
创建作业
创建作业 controller
fix rspec
增加 homework scope
Merge branch 'master' of github.com:mindpin/eshare
fix and merge
Merge branch 'master' of github.com:mindpin/eshare
querstion
merge
增加提交作业
homework_upload sepc
update uploader js
Merge branch 'master' of github.com:mindpin/eshare
Merge branch 'master' of github.com:mindpin/eshare
作业的上传文件
update file upload js
convert_ppt
抽取配置