Datagrid popup usability

Close button
It would be nice to have a Close button on the datagrid popup.
Buttons order should be: Autosave - Save - Close (see attached popin_example1.png)

Popup Title
The popup should have a title ( Spreadsheet edition for example, see attached popin_example1.png).

Save button behavior
Clicking the Save button should save changes and not close the pop up.

Autosave
"Changes will be automatically saved!" should be displayed as a message in the pop up buttons area when the autosave option is activated. See screenshot (see attached popin_example2.png).