实现用户模块，包括用户注册，登陆，修改个人资料等；
The mode of realized user include: registration, logining, amending personal information etc;
基本功能包括用户注册会员、登录、图书展示、图书查询，管理员操作等。
Member of the basic features include user registration, login, book display, book information, the administrator manipulation.
当作业在注册基本节点或部署管理器上运行时，用户必须具有包括该作业所需的角色的权限。
When a job runs on a registered base node or deployment manager, the user must have privileges that include the role required for that job.
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