[turba] Default displayed columns in Turba

[Paul Reilly]

Is there a way to set the default columns displayed in Turba
when using an LDAP source? By default it just displays the
Name, but I can use the prefs systems to select which columns
are displayed. I see this adds the following to horde_prefs.

| paul at tcd.ie   | turba      | columns          | localsql    email
mydirectory    first   last    email   department      category |

is there an equivalent that I can put in as a locked item in
/turba/config/prefs.php  ?

Paul