[horde] What is horde_histories for?

[Otto Stolz]

Sorry, typo in table name. I meant to write:
> PPS.
> 
> my beta-test version (Horde 3.1.3 + Imp 4.1.3 + Turba 2.1.3,
> with data imported from the old production version Horde 2.2
> + IMP 3.2 + Turba 1.2) one field that is not created
> by horde/scripts/sql/create.mysql.sql, viz.
> - table: horde_datatree, field: datatree_updated.
> 
> What about this? Is it no longer required? Should I
> drop it from the beta-test version, or should I add it
> to the forthcoming production version?
> 
> Thanks for any insight.
> 
> Best wishes,
>     Otto Stolz