changes in UsersTable.php

Vqalidation was not working properly.
[fr] fix typo
[fr] fix typos
[fr] small typo
[fr] Follow #1411

3.0 console casing
Merge pull request #1397 from archanavhire/patch-2

changes in UsersTable.php
Correct whitespace and use terser form

Related to cakephp/docs#1397