Register Email 3.8

Some members were having problems with using the XenForo email sending code. So I put back the old PHP email sending code which worked perfect.

Added code to support SMTP email transport and sending to multiple admins.

Added link to whatismyipaddress website.

Fixed issue where error was produced if custom user fields were not used.

Added code to prevent server error log in conditions where the location information is missing.

Added code to prevent server error log in conditions where the location information is missing.

Updated code to eliminate server error log if no location found.

Fixes a minor problem dealing with IP address variable.