[zendframework/zf2#1706] Move plugin registration
[zendframework/zf2#1706] Move plugin registration

- Removed Zend\I18n\Validator\ValidatorPluginManager
- Added Iban and PostCode validators to Zend\Validator\ValidatorPluginManager

zf2timo/zend-validator,ezimuel/zend-validator,svycka/zend-validator,Maks3w/zend-validator,akrabat/zend-validator,zendframework/zend-validator,weierophinney/zend-validator