User's UAffiliateGroup renamed to UGroup, made unsigned, removed nullable flag.
Note's NCreatedByUID made nullable (null created by means system).
Removed Group GRAbbr.
GroupAdmin and GameAdmin made into 3-way pivot with Group/Game.
Added GameHasGameOrganization, allowing an organization to be linked to a game.
Added Game/Group, GameUser, Note, NoteType, and RoleSeeder.
Seeders now cover every table in the database.