OK, I put new DataGrid to widgets.datagrid module and renamed existing to FastDataGrid, please check it out (r679).
Some notes. I also added widgets/templates/datagrid.kid to be used with plain DataGrid class. It is intentionally simple to facilitate user's extensions and contains no fast-links (edit/add/delete). DataGrid introduces new DataGrid.Column type that allows one to define additional properties (I use it to mark sortable columns in a grid). Override fields at display time is also supported. FastDataGrid realized as a subclass that simply extracts fields info from SQLObjects' metadata and then passes to DataGrid for rendition. Templates are passed new 'columns' variable which is a list of abovementioned DataGrid.Column instances. I updated templates to use it instead of collist/headers but those variables still passed for backward-compatibility with existing user templates. The documentation(*) has to be updated yet. * - http://trac.turbogears.org/turbogears/wiki/DataGridWidget
