Application form updates

This PR is a rollup of several enhancements and updates based on user feedback. Pending changes from Abby's feedback which Ehud is reviewing as I open this.
Did you get a chance to have a look at the call to format.xls in the users_controller?  If that works, it may be worthwhile to add that here too so we can export to Excel files instead of csv's and modify it to be more nicely formatted if requested.