Better icon for slideshow functionality
Summary
Find a better icon for slideshows, possibly have one created upstream
Description
I have tested a build of Papers, at first glance I thought that the slideshow functionality got removed from the menu. Under more careful inspection I could see that it is now among the icons at the top of the hamburger menu, which is nice, but the icon itself is confusing and not something I usually recognize as slideshow.
Relevant art includes LibreOffice, Google Slides, Microsoft Office and the like. All of them show some variant of a projector screen instead of a projector, with a play button inside. They are all immediately recognizable.