Centralize permissions/lists

[robertquitt]

Currently, there are multiple "sources of truth" when it comes to officers, politburo, shadow pb.

Sources of truth:

• Google Drive shares
• Mailing lists (mailman)
• Slack channels and permissions
• Website (django db)
• Unix groups (LDAP on soda/tap)
• Github permissions

If we could reduce these by having one read from another, then that would make things easier to maintain.

Possible solutions:

• A bot that reads everything from the LDAP server and uses info from there
• Any other ideas?