WIP: BUG 15158: Enable screen shots of Spreadsheet Views
Attempting to save a screen shot from a Spreadsheet View would result in an error message after users went through the motions of saving an image.
This change makes it possible to save the currently rendered content of a Spreadsheet View as an image.
Limitations:
- magnification factor is ignored
- custom image size is ignored
- The spreadsheet view is not saved out when all views in a layout are saved