Word Documents; added support for Secured Signing TextLink, i.e. sending an SMS invitation to sign

A new option has been added for Word Document Electronic Signature blocks for Secured Signing "TextLink", i.e. sending an SMS invitation to sign.

To utilise, add a new constant in the Document "SecuredSigningUseTextLink" and set to True. The standard documents now include this constant by default.

The Electronic Signature block will then update the Secured Signing Smart Tag to include details for sending an SMS invite, including the mobile phone number. Note, if the Client does not include a valid Mobile Phone Number this will not be set.

Note, the Secured Signing account requires SMS to be enabled.

The following standard Documents have been updated:

"Loan_Contract_NZCCCFA.xml" has been updated to version 1.06 on 5/09/2017.
"Loan_Contract_NZCCCFA_RC.xml" has been updated to version 1.05 on 5/09/2017.