person: disable autocomplete for password fields

Some users have reported that their webbrowsers automatically fill in one
or both of the password change fields, even if the relevant tab is not
focused.  This results in unexpected and annoying "passwords do not match"
errors.
report: add accommodation report
sql: description of accommodation report
report: add filter options to review report

Add options to exclude rejected events and events the user has
rated.  This makes reviewing submissions a lot more efficient.
report: only show review table when it's ready
submission: add biography hints