Applications for "Open" membership committees

[inghamn]

Because the "Takes Applications" is defined at the seat level, "Open" committees do not allow for applying to be a member.

To account for committees without seats, we probably want want to define a "Takes Applications" at the committee level, as well as the seat level.

[inghamn]

Applications are always for the committee overall and are not tied to any particular seat. It might make sense to move the "Takes Applications" flag to the committee level, rather than each individual seat.