Add Arabic language package and delete iban validator for morocco

This pull request contains : 
* Delete iban validator for morocco

according to the [official IBAN REGISTRY](http://www.swift.com/dsp/resources/documents/IBAN_Registry.pdf) and to this web site [http://www.sendmoneyhome.co.uk/send-money-to/morocco.html](http://www.sendmoneyhome.co.uk/send-money-to/morocco.html), it seems that Morocco doesn't use the IBAN number.
My fault is that i was using an unofficial document, so sorry about that because i didn't check that at the beginning.

* Add Arabic language package