[turba] Remove "change permissions" button

[Chuck Hagenbuch]

Quoting Oberdan Albertoni <obe at digicolor.net>:

> when I am in "Manage address book" and click on the "change permssions"
> button, I can see all account user from dropdown list "Owner Permissions".
> I want to avoid that is possible ?

In Horde 3.2 RCs and later, turn on $conf['share']['no_sharing']

-chuck

-- 
"I have concerns that we are not behaving like a mature, responsible,  
collection of interdependent organisms." - Rick O.