Setting to not search on render

[programcsharp]

Sometimes the query is heavy particularly without criteria, so it would be good to be able to only use filterform mode and execute the grid method when critieria is entered and search is clicked rather than on first render.

Right now I'm doing this in the grid method:

    if (ControllerContext.ParentActionViewContext != null)
        return new GriddlyResult<TravelEntriesModel>(new List<TravelEntriesModel>().AsQueryable());

Works, but it would be better to have a GriddlySettings property for that.