Newest uploaded PDF slides should be on top of the PDF model list. (1)

If an organizer has a lot of PDF's uploaded into Quizzard, it can be quite the scrolling experience to scroll to the last PDF in the list. In order to solve this issue, it is nice to have the most recent PDF's on top of the list, such that they are easily accessible.

• Change the order of the list of PDF's in the PDF modal. (1)