Bugfix: when groupSelectsChildren=true, was failing to update top parent rows when 3 or more columns grouped.
Bugfix: when groupSelectsChildren=true, was failing to update top parent rows when 3 or more columns grouped.

makinggoodsoftware/ag-grid,ceolter/ag-grid,seanlandsman/ag-grid,killyosaur/ag-grid,killyosaur/ag-grid,ceolter/angular-grid,seanlandsman/ag-grid,ua9msn/ag-grid,makinggoodsoftware/ag-grid,ua9msn/ag-grid,ceolter/angular-grid,ceolter/ag-grid,killyosaur/ag-grid,seanlandsman/ag-grid