Account for Directorship Requirement Scaling

[liam-middlebrook]

As of ComputerScienceHouse/Constitution#124 the number of directorship meetings required for the Membership Evaluation is scaled to 15 meetings per semester that a member is active per standard operating session.

At first thought implementation of this could default to 30 (as the CSH Standard Operating Session includes the Fall and Spring Semesters) and then if there is a co-op entry for a member the number would be reduced to only 15. While that way isn't inherently "scalable" it does provide an easier implementation and works under the reasonable assumption that the CSH Standard Operating Session won't have it's definition changed anytime soon.

[liam-middlebrook]

Fixed in: 8902487