Determine is_admin based on 'Admin' role; remove dead project_ref code; pass auth_token into request context; pass user_id/project_id into request context instead of their refs (131)

Determine is_admin based on 'Admin' role; remove dead project_ref code; pass auth_token into request context; pass user_id/project_id into request context instead of their refs (131) · Gerrit Code Review