- show discard-all-bug-reports menu item as long as there is at least one bug report
- move the close-and-save button to the left-hand side of the dialog
- ask about discarding bug reports when clicking the close box
- working dealing with empty bug reports
- the 'finished' stage of the bug report form sets the focus to the close button
closes PR 11644
closes PR 11645
closes PR 11638
closes PR 11640
also cleaned up a bunch of little things in the bug report implementation:
- the abort had race conditions
- formatted the collections a little bit better (hopefully)
- broke the implementation up into multiple files
- fixed broken interaction with drracket (the drracket frame mixin is now being used properly)
