Add tooltip widget.

Update jQuery library to include all jQuery UI for future use.
List user php.
Add a dialog to edit user.
Add user delete feature
Restore edit admin option

Restore the feature that the abstract class "Login" can modify the admin
power.
But unset the option in edit_user.php
Cancel that Login::edit can only modify oneself.
User management: upgrade feature.
Users management: add (HTML)
Add user (client side)
Almost complete the client side about adding user.
Complete the feature- add user.
List in user manage can change page now.