Org/Space user count not updated after changes

[richard-cox]

The user counts in org and space summary pages aren't updated following adding/removing user roles to that org/space

To reproduce

• nav to an org/space summary (note user count)
• nav to user table and add/remove a user
• nav back to org/space summary and user count has not been updated

Notes

• user count comes from fetchTotalUsers --> fetchTotalResults, which creates a pagination section and populates the usual way
• reducer userSpaceOrgReducer ensures that add/remove actions also update request data user info
• nothing happens to the pagination section
  • need an effect to clear specific pagination sections