* Add user password encryption salt
* update the salt logic
* Update the SQL files
* Add an update admin login permission interface
* update the is_staff field comment
* update the staff error msg
* Update user backend management operation permissions
* Update user role interface to standalone
* Fix the userinfo schema department field type
* fix update userinfo values
* fix update user avatar value
* update readme docs
* update test data sql
* update readme typo
* update readme docs