Team object, team membership
Implement Team.run_jobs
Add type info to member propagation jobs
Explicitly set member type
Remove STI for members
Expect member key
Test membership filtering by Team and CloudUser
Make remove_members work the same as add_members, default members to user members
Make role_for work with teams
Handle type being nil in the datastore for user members
Add test to distinguish type in member operations
Typo