Add Brothers in positions with committees to committees they're the chair of

[helper08]

If a Brother is a position that is the chair of a committee, when they become the chair, they should automatically become a member of that committee.

This would require that attendance sheets exclude the chair from that list Also for committee assignments, the VP should not be able to remove them from this committee. This either means making the checkbox for that committee invalid or removing the checkbox altogether and having this always return true