title: Remove templaterole from envelope
body: <p>I have a template with a Signer and a CarbonCopy role.  I create envelopes from the template.  Sometimes I don't have a CC email to use for the CC templaterole.  If I leave it blank, or if I don't provide the corresponding xml, (in both cases) I get an INVALID EMAIL ADDRESS error.  The role is not set to be required, so I don't understand why this error occurs.  Is there any way to remove the templaterole from the envelope to prevent this ?</p>