Delegate PaperView: Avoid auto-refresh whenever a paper is uploaded

Currently, when a delegate uploads a paper, we refresh the page so that the paper submission table store gets updated. We can modify the store with a listener to simply re-mount the components when a paper is uploaded instead of refreshing. 

Note this is something to make paper uploads nicer, but is not required for full functionality. Something to keep in mind as we work on #764 