Update the permission lozenge immediately when adding a user to a group

When adding a user to a group via their profile page (https://stash-lab.optusnet.com.au/admin/users/view?name=user), the permission status image isn't updated until the page is reloaded.

To reproduce:

• Open up a user's profile page for a user who has no special permissions
• add them to a group that gives admin permissions

Expected: Permission lozange is updated from 'project creator' to 'administrator'
Actaul: Permission lozange doesn't change until the page is reloaded. (This is just cosmetic; the actual permissions for the user are updated)

I found STASH-2538, but that's closed and this is still an issue in 3.1.3.