[Seaside] grease-core extensions that exist in pharo 2.0

[Torsten Bergmann]

>Would you be terribly unhappy to check with Seaside 3.1? It should be
>fixed there part of the general better Pharo 2.0 support without
>breaking backwards compatibility. Also there is an experimental spec
>based UI that replaces the OB based one. And a totally new
>configuration. Now I know it's not been officially released yet be we
>need people using and testing it.

where is the config?  

Thx
T.