The Cc: text input field is replaced by an "Add me to Cc:" or "Remove me from Cc:" checkbox when the TICKET_EDIT_CC permission is not available.
That permission is automatically granted to TICKET_ADMIN users.
This aims to preserve the confidentiality of the e-mail addresses as required by #153.
Closes #1459.
Authored by: cboos 2007-11-28
Parent: [r6242]
Child: [r6244]
