In Jupyter, the standard convention to collapse cell outputs is to click to the left of the cell output. Currently, the Spark progress bar section does not follow this convention, and instead uses a non-standard "hide all" button along the top of the section. To improve the experience for the user, this "hide all" button should be removed, and instead the standard "left of the cell output" button should be added.
Why is it useful?
|Who would benefit from this IDEA?|
How should it work?