Exclude 'biography' from `Person.columns`

As in d1fc876aae4e7a8dbb8ca74e4b80452102e1e4e4, this will enable us to
gracefully remove the biography column in a future commit (the biography now
comes from the person_translations table).
Exclude 'name' and 'responsibilities' from Role.columns

As in d1fc876aae4e7a8dbb8ca74e4b80452102e1e4e4, this will enable us to
gracefully remove the name and responsibilities columns in a future commit
(these values now comes from the role_translations table).