The task 'deleted' field was an int for historical (sqlite) reasons, and we were accidentally storing it as a string sometimes, so it always showed up as true. Changed it to an actual bool, and fixed existing DB records. Fixes #231
Default new sprint membership to previous sprint's. Fixes #218
Change shell su to recognize an admin impersonating a non-admin
Move backlog task display into TaskTable
Rewrote task importing to use a TaskTable. Fixes #97, fixes #224