修改upload.rake 图片包含异常符号shell不能识别 增加参数cost，girl_id, 命令rake upload_pic_to_qiniu\[图片地址,server_patj,cost,girl_id\]
对分享照片页面增加阅后即焚功能,超过十分钟改链接失效
added cache
Merge branch 'xiaolong'

Conflicts:
	app/controllers/api/dailyposts_controller.rb
	lib/tasks/upload.rake