[horde] index.php falls back to http on redirect

[Mike Cochrane]

> ----- Message from dadirtyluk at gmx.de ---------
> the webserver,but the webserver itself has no ssl capabilities but is
> encrypted through sslwrap. that shouldn't be

In this cause horde is not going to send https as i don't know about any ssl
capabilities for the server it's runniong one. You'll have to force https being
used in horde/config/conf.php

- Mike :-)