[horde] Removing "home" icon

[Kevin Konowalec]

One last question...

I've set up our installation (latest horde/imp/turba) so that the  
horde portal is not accessible or visible to our users.  However, when  
you go into the global options there is an icon at the top with the  
Horde logo on it called "Home" that takes you right to the portal page  
despite it being not available anywhere else.  Is there a  
configuration option to get rid of this?

Many thanks

K