coding for user
list user (ok)
view user.css(ok)
update (ok)
create (ok)
access role (ok)
login/logout(ok)
Merge branch 'master' of https://github.com/thanhtuyen/vaco

Conflicts:
	protected/controllers/admin/UserController.php
	protected/globals.php
	protected/models/User.php
	protected/views/admin/user/_form.php