osTicket/osTicket-1.7 — pull request #223 by greezybacon (2012-08-13 16:20:22+00:00)
Title: Implement automatic client logins

This commit allows for a link to be written in an email template

```
%url/view.php?e=%email&t=%ticket&a=%auth
```

which will short-circuit the client login procedure. The ticket-auth-token is generated using the ticketing system secret salt and the internal ticket id so that the auth-token is not externally guessable. As a convenience, `%clientlink` can be used in substitution of the above url to support changes to the client authentication system in the future. *ie. the link can be changed again in the future and no further changes will be necessary to the email templates.*

@soif, what are your thoughts with this implementation?