Add language strings for multilingual Registration

Hi,

I think it will be very useful to add this language strings to make the Registration process multilingual.

DEFINE ('_UE_PENDING_APPROVAL_SUBJECT','Your Registration is Pending Approval');
DEFINE ('_UE_PENDING_APPROVAL_EMAIL','Greetings [NAME],

We have received your registration request and we will process it as soon as you confirm your email address by clicking on the following hyperlink:[CONFIRM]

Once your email address is confirmed our moderators will be notified to continue the activation process.
You will be notified by email of the progress of your registration process.

[DETAILS]

Kind Regards,
Administrator');
DEFINE('_UE_WELCOME_SUBJECT','New User Details');
DEFINE('_UE_WELCOME_EMAIL','Welcome [NAME],

Your application has been approved by our administration team.

Your account has been activated with the following details:
[DETAILS]

Enjoy the experience!
Kind Regards,
Administrator');

Also make the necessary comments in the CB Registration Tab like in the attached image.