[SpeedGrader] Allow greater zoom out
In SpeedGrader, if a PDF file is submitted with a very large page size, then SpeedGrader is not able to zoom out far enough to see the entire page. The "-" zoom button becomes grayed out before the whole page is visible. It's then necessary to scroll around the page, but it's a problem to not be able to see a whole page at once. Downloading the files and viewing in a desktop PDF program is a workaround, but not convenient if you are also trying to add comments or grading markup to the submission (which I frequently need to do, as my students are submitting design drawings like floor plans.) This idea is based on a Canvas Forum question: https://community.canvaslms.com/t5/Canvas-Question-Forum/SpeedGrader-can-t-zoom-out-with-large-PDF-p...
Allow zooming out further in SpeedGrader so the grader can view the entire submission and make annotations more easily.
instructor,designer
